39690156690 has 48 divisors (see below), whose sum is σ = 103275139968. Its totient is φ = 10575761568.

The previous prime is 39690156689. The next prime is 39690156707. The reversal of 39690156690 is 9665109693.

It is a happy number.

It is a super-2 number, since 2×39690156690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56394 + ... + 287333.

It is an arithmetic number, because the mean of its divisors is an integer number (2151565416).

Almost surely, 2^39690156690 is an apocalyptic number.

39690156690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39690156690 is an abundant number, since it is smaller than the sum of its proper divisors (63584983278).

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

39690156690 is a wasteful number, since it uses less digits than its factorization.

39690156690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345023 (or 345020 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 54.

The spelling of 39690156690 in words is "thirty-nine billion, six hundred ninety million, one hundred fifty-six thousand, six hundred ninety".