61995455372 has 6 divisors (see below), whose sum is σ = 108492046908. Its totient is φ = 30997727684.

The previous prime is 61995455299. The next prime is 61995455383. The reversal of 61995455372 is 27355459916.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7749431918 + ... + 7749431925.

It is an arithmetic number, because the mean of its divisors is an integer number (18082007818).

Almost surely, 2^61995455372 is an apocalyptic number.

It is an amenable number.

61995455372 is a deficient number, since it is larger than the sum of its proper divisors (46496591536).

61995455372 is a wasteful number, since it uses less digits than its factorization.

61995455372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15498863847 (or 15498863845 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 56.

The spelling of 61995455372 in words is "sixty-one billion, nine hundred ninety-five million, four hundred fifty-five thousand, three hundred seventy-two".