61674478356 has 24 divisors (see below), whose sum is σ = 144524749824. Its totient is φ = 20469926080.

The previous prime is 61674478343. The next prime is 61674478387. The reversal of 61674478356 is 65387447616.

61674478356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 61674478296 and 61674478305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11026260 + ... + 11031851.

It is an arithmetic number, because the mean of its divisors is an integer number (6021864576).

Almost surely, 2^61674478356 is an apocalyptic number.

It is an amenable number.

61674478356 is an abundant number, since it is smaller than the sum of its proper divisors (82850271468).

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

61674478356 is a wasteful number, since it uses less digits than its factorization.

61674478356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22058351 (or 22058349 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 57.

The spelling of 61674478356 in words is "sixty-one billion, six hundred seventy-four million, four hundred seventy-eight thousand, three hundred fifty-six".