61672912472 has 32 divisors (see below), whose sum is σ = 117716349600. Its totient is φ = 30283468800.

The previous prime is 61672912439. The next prime is 61672912487. The reversal of 61672912472 is 27421927616.

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, 214229 + ... + 411387.

It is an arithmetic number, because the mean of its divisors is an integer number (3678635925).

Almost surely, 2^61672912472 is an apocalyptic number.

It is an amenable number.

61672912472 is a deficient number, since it is larger than the sum of its proper divisors (56043437128).

61672912472 is a wasteful number, since it uses less digits than its factorization.

61672912472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197867 (or 197863 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 61672912472 in words is "sixty-one billion, six hundred seventy-two million, nine hundred twelve thousand, four hundred seventy-two".