61364960478 has 64 divisors (see below), whose sum is σ = 145565683200. Its totient is φ = 19105450560.

The previous prime is 61364960477. The next prime is 61364960513. The reversal of 61364960478 is 87406946316.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61364960477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348351 + ... + 494042.

It is an arithmetic number, because the mean of its divisors is an integer number (2274463800).

Almost surely, 2^61364960478 is an apocalyptic number.

61364960478 is an abundant number, since it is smaller than the sum of its proper divisors (84200722722).

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

61364960478 is a wasteful number, since it uses less digits than its factorization.

61364960478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842494 (or 842488 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 61364960478 in words is "sixty-one billion, three hundred sixty-four million, nine hundred sixty thousand, four hundred seventy-eight".