38772561616 has 10 divisors (see below), whose sum is σ = 75121838162. Its totient is φ = 19386280800.

The previous prime is 38772561577. The next prime is 38772561671. The reversal of 38772561616 is 61616527783.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32934990400 + 5837571216 = 181480^2 + 76404^2 .

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, 1211642535 + ... + 1211642566.

Almost surely, 2^38772561616 is an apocalyptic number.

It is an amenable number.

38772561616 is a deficient number, since it is larger than the sum of its proper divisors (36349276546).

38772561616 is a wasteful number, since it uses less digits than its factorization.

38772561616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2423285109 (or 2423285103 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The spelling of 38772561616 in words is "thirty-eight billion, seven hundred seventy-two million, five hundred sixty-one thousand, six hundred sixteen".