61906465908 has 36 divisors (see below), whose sum is σ = 178840902240. Its totient is φ = 17687561616.

The previous prime is 61906465897. The next prime is 61906465939. The reversal of 61906465908 is 80956460916.

It is a happy number.

61906465908 is a `hidden beast` number, since 6 + 1 + 9 + 0 + 6 + 46 + 590 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122830038 + ... + 122830541.

It is an arithmetic number, because the mean of its divisors is an integer number (4967802840).

Almost surely, 2^61906465908 is an apocalyptic number.

It is an amenable number.

61906465908 is an abundant number, since it is smaller than the sum of its proper divisors (116934436332).

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

61906465908 is a wasteful number, since it uses less digits than its factorization.

61906465908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245660596 (or 245660591 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 61906465908 in words is "sixty-one billion, nine hundred six million, four hundred sixty-five thousand, nine hundred eight".