61907286012 has 48 divisors (see below), whose sum is σ = 169703893632. Its totient is φ = 17316722880.

The previous prime is 61907286011. The next prime is 61907286017. The reversal of 61907286012 is 21068270916.

It is a super-2 number, since 2×61907286012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61907286011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18036538 + ... + 18039969.

It is an arithmetic number, because the mean of its divisors is an integer number (3535497784).

Almost surely, 2^61907286012 is an apocalyptic number.

It is an amenable number.

61907286012 is an abundant number, since it is smaller than the sum of its proper divisors (107796607620).

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

61907286012 is a wasteful number, since it uses less digits than its factorization.

61907286012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36076538 (or 36076536 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 61907286012 in words is "sixty-one billion, nine hundred seven million, two hundred eighty-six thousand, twelve".