61655364402 has 16 divisors (see below), whose sum is σ = 123802009632. Its totient is φ = 20469908000.

The previous prime is 61655364319. The next prime is 61655364451. The reversal of 61655364402 is 20446355616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20468403 + ... + 20471414.

It is an arithmetic number, because the mean of its divisors is an integer number (7737625602).

Almost surely, 2^61655364402 is an apocalyptic number.

61655364402 is an abundant number, since it is smaller than the sum of its proper divisors (62146645230).

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

61655364402 is a wasteful number, since it uses less digits than its factorization.

61655364402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40940073.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 61655364402 in words is "sixty-one billion, six hundred fifty-five million, three hundred sixty-four thousand, four hundred two".