61003687140 has 144 divisors (see below), whose sum is σ = 209343476160. Its totient is φ = 14788759680.

The previous prime is 61003687123. The next prime is 61003687181. The reversal of 61003687140 is 4178630016.

61003687140 is a `hidden beast` number, since 610 + 0 + 36 + 8 + 7 + 1 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 61003687095 and 61003687104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517095 + ... + 624014.

It is an arithmetic number, because the mean of its divisors is an integer number (1453774140).

Almost surely, 2^61003687140 is an apocalyptic number.

61003687140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61003687140 is an abundant number, since it is smaller than the sum of its proper divisors (148339789020).

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

61003687140 is a wasteful number, since it uses less digits than its factorization.

61003687140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141144 (or 1141130 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 61003687140 in words is "sixty-one billion, three million, six hundred eighty-seven thousand, one hundred forty".