39542518616 has 8 divisors (see below), whose sum is σ = 74142222420. Its totient is φ = 19771259304.

The previous prime is 39542518579. The next prime is 39542518703. The reversal of 39542518616 is 61681524593.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×39542518616² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2471407406 + ... + 2471407421.

Almost surely, 2^39542518616 is an apocalyptic number.

It is an amenable number.

39542518616 is a deficient number, since it is larger than the sum of its proper divisors (34599703804).

39542518616 is a wasteful number, since it uses less digits than its factorization.

39542518616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4942814833 (or 4942814829 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 50.

The spelling of 39542518616 in words is "thirty-nine billion, five hundred forty-two million, five hundred eighteen thousand, six hundred sixteen".