39806139072 has 56 divisors (see below), whose sum is σ = 120366186496. Its totient is φ = 11373182208.

The previous prime is 39806139049. The next prime is 39806139091. The reversal of 39806139072 is 27093160893.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 14807488 + ... + 14810175.

Almost surely, 2^39806139072 is an apocalyptic number.

39806139072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

39806139072 is an abundant number, since it is smaller than the sum of its proper divisors (80560047424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39806139072 is a wasteful number, since it uses less digits than its factorization.

39806139072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29617685 (or 29617675 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 39806139072 in words is "thirty-nine billion, eight hundred six million, one hundred thirty-nine thousand, seventy-two".