61272668216 has 32 divisors (see below), whose sum is σ = 115386768000. Its totient is φ = 30502956000.

The previous prime is 61272668203. The next prime is 61272668221. The reversal of 61272668216 is 61286627216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8877935 + ... + 8884833.

It is an arithmetic number, because the mean of its divisors is an integer number (3605836500).

Almost surely, 2^61272668216 is an apocalyptic number.

It is an amenable number.

61272668216 is a deficient number, since it is larger than the sum of its proper divisors (54114099784).

61272668216 is a wasteful number, since it uses less digits than its factorization.

61272668216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11579 (or 11575 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The spelling of 61272668216 in words is "sixty-one billion, two hundred seventy-two million, six hundred sixty-eight thousand, two hundred sixteen".