38997711690 has 32 divisors (see below), whose sum is σ = 106965152640. Its totient is φ = 8913762624.

The previous prime is 38997711673. The next prime is 38997711707. The reversal of 38997711690 is 9611779983.

It is an interprime number because it is at equal distance from previous prime (38997711673) and next prime (38997711707).

It is a super-2 number, since 2×38997711690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92851485 + ... + 92851904.

It is an arithmetic number, because the mean of its divisors is an integer number (3342661020).

Almost surely, 2^38997711690 is an apocalyptic number.

38997711690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38997711690 is an abundant number, since it is smaller than the sum of its proper divisors (67967440950).

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

38997711690 is a wasteful number, since it uses less digits than its factorization.

38997711690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185703406.

The product of its (nonzero) digits is 5143824, while the sum is 60.

The spelling of 38997711690 in words is "thirty-eight billion, nine hundred ninety-seven million, seven hundred eleven thousand, six hundred ninety".