61257822179456 has 64 divisors (see below), whose sum is σ = 139844851903680. Its totient is φ = 26182967897088.

The previous prime is 61257822179429. The next prime is 61257822179459. The reversal of 61257822179456 is 65497122875216.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 61257822179392 and 61257822179401.

It is not an unprimeable number, because it can be changed into a prime (61257822179459) 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, 91312046 + ... + 91980461.

It is an arithmetic number, because the mean of its divisors is an integer number (2185075810995).

Almost surely, 2^{61257822179456} is an apocalyptic number.

It is an amenable number.

61257822179456 is an abundant number, since it is smaller than the sum of its proper divisors (78587029724224).

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

61257822179456 is a wasteful number, since it uses less digits than its factorization.

61257822179456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183292901 (or 183292889 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 65.

The spelling of 61257822179456 in words is "sixty-one trillion, two hundred fifty-seven billion, eight hundred twenty-two million, one hundred seventy-nine thousand, four hundred fifty-six".