61951422402 has 32 divisors (see below), whose sum is σ = 137840097600. Its totient is φ = 20624933664.

The previous prime is 61951422391. The next prime is 61951422419. The reversal of 61951422402 is 20422415916.

It is a happy number.

61951422402 is a `hidden beast` number, since 6 + 195 + 1 + 422 + 40 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665368 + ... + 752739.

It is an arithmetic number, because the mean of its divisors is an integer number (4307503050).

Almost surely, 2^61951422402 is an apocalyptic number.

61951422402 is an abundant number, since it is smaller than the sum of its proper divisors (75888675198).

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

61951422402 is a wasteful number, since it uses less digits than its factorization.

61951422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418927 (or 1418921 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 61951422402 in words is "sixty-one billion, nine hundred fifty-one million, four hundred twenty-two thousand, four hundred two".