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61245208801 = 761914134597
BaseRepresentation
bin111001000010011111…
…111011100011100001
312212002021122222002201
4321002133323203201
52000412233140201
644045145213201
74265466454030
oct710237734341
9185067588081
1061245208801
1123a79361947
12ba52a91201
135a1072002a
142d6ddd0717
1518d6c1d801
hexe427fb8e1

61245208801 has 8 divisors (see below), whose sum is σ = 70107606080. Its totient is φ = 52411081968.

The previous prime is 61245208789. The next prime is 61245208823. The reversal of 61245208801 is 10880254216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61245208801 - 25 = 61245208769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61245208861) 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, 7062966 + ... + 7071631.

It is an arithmetic number, because the mean of its divisors is an integer number (8763450760).

Almost surely, 261245208801 is an apocalyptic number.

It is an amenable number.

61245208801 is a deficient number, since it is larger than the sum of its proper divisors (8862397279).

61245208801 is a wasteful number, since it uses less digits than its factorization.

61245208801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135223.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 61245208801 in words is "sixty-one billion, two hundred forty-five million, two hundred eight thousand, eight hundred one".

Divisors: 1 7 619 4333 14134597 98942179 8749315543 61245208801