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61047443140 = 2254370985399
BaseRepresentation
bin111000110110101101…
…100000111011000100
312211120111112102121121
4320312231200323010
52000011121140030
644013402323324
74260545463535
oct706655407304
9184514472547
1061047443140
1123987765652
12b9b87b9544
1359ab768a28
142d51a3068c
1518c46a647a
hexe36b60ec4

61047443140 has 24 divisors (see below), whose sum is σ = 131181019200. Its totient is φ = 23851093728.

The previous prime is 61047443131. The next prime is 61047443141. The reversal of 61047443140 is 4134474016.

61047443140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61047443096 and 61047443105.

It is not an unprimeable number, because it can be changed into a prime (61047443141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35491840 + ... + 35493559.

It is an arithmetic number, because the mean of its divisors is an integer number (5465875800).

Almost surely, 261047443140 is an apocalyptic number.

It is an amenable number.

61047443140 is an abundant number, since it is smaller than the sum of its proper divisors (70133576060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61047443140 is a wasteful number, since it uses less digits than its factorization.

61047443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70985451 (or 70985449 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 61047443140 in words is "sixty-one billion, forty-seven million, four hundred forty-three thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 70985399 141970798 283941596 354926995 709853990 1419707980 3052372157 6104744314 12209488628 15261860785 30523721570 61047443140