39869165542 has 4 divisors (see below), whose sum is σ = 59803748316. Its totient is φ = 19934582770.

The previous prime is 39869165537. The next prime is 39869165599. The reversal of 39869165542 is 24556196893.

39869165542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×39869165542² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 9967291384 + ... + 9967291387.

It is an arithmetic number, because the mean of its divisors is an integer number (14950937079).

Almost surely, 2^39869165542 is an apocalyptic number.

39869165542 is a deficient number, since it is larger than the sum of its proper divisors (19934582774).

39869165542 is a wasteful number, since it uses less digits than its factorization.

39869165542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19934582773.

The product of its digits is 13996800, while the sum is 58.

The spelling of 39869165542 in words is "thirty-nine billion, eight hundred sixty-nine million, one hundred sixty-five thousand, five hundred forty-two".