61672661216 has 12 divisors (see below), whose sum is σ = 121418051832. Its totient is φ = 30836330592.

The previous prime is 61672661147. The next prime is 61672661221. The reversal of 61672661216 is 61216627616.

61672661216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963635300 + ... + 963635363.

It is an arithmetic number, because the mean of its divisors is an integer number (10118170986).

Almost surely, 2^61672661216 is an apocalyptic number.

It is an amenable number.

61672661216 is a deficient number, since it is larger than the sum of its proper divisors (59745390616).

61672661216 is a wasteful number, since it uses less digits than its factorization.

61672661216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927270673 (or 1927270665 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The spelling of 61672661216 in words is "sixty-one billion, six hundred seventy-two million, six hundred sixty-one thousand, two hundred sixteen".