61295944864 has 96 divisors (see below), whose sum is σ = 155307220992. Its totient is φ = 23111136000.

The previous prime is 61295944841. The next prime is 61295944873. The reversal of 61295944864 is 46844959216.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61295944799 and 61295944808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324852 + ... + 477619.

It is an arithmetic number, because the mean of its divisors is an integer number (1617783552).

Almost surely, 2^61295944864 is an apocalyptic number.

It is an amenable number.

61295944864 is an abundant number, since it is smaller than the sum of its proper divisors (94011276128).

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

61295944864 is a wasteful number, since it uses less digits than its factorization.

61295944864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802530 (or 802522 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 58.

The spelling of 61295944864 in words is "sixty-one billion, two hundred ninety-five million, nine hundred forty-four thousand, eight hundred sixty-four".