61335621156 has 12 divisors (see below), whose sum is σ = 143116449392. Its totient is φ = 20445207048.

The previous prime is 61335621143. The next prime is 61335621161. The reversal of 61335621156 is 65112653316.

61335621156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555650870 + ... + 2555650893.

Almost surely, 2^61335621156 is an apocalyptic number.

It is an amenable number.

61335621156 is an abundant number, since it is smaller than the sum of its proper divisors (81780828236).

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

61335621156 is a wasteful number, since it uses less digits than its factorization.

61335621156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111301770 (or 5111301768 counting only the distinct ones).

The product of its digits is 97200, while the sum is 39.

The spelling of 61335621156 in words is "sixty-one billion, three hundred thirty-five million, six hundred twenty-one thousand, one hundred fifty-six".