388716836890 has 16 divisors (see below), whose sum is σ = 701028155808. Its totient is φ = 155189434896.

The previous prime is 388716836881. The next prime is 388716836903. The reversal of 388716836890 is 98638617883.

It is a super-2 number, since 2×388716836890² (a number of 24 digits) contains 22 as substring.

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, 37156992 + ... + 37167451.

It is an arithmetic number, because the mean of its divisors is an integer number (43814259738).

Almost surely, 2^388716836890 is an apocalyptic number.

388716836890 is a deficient number, since it is larger than the sum of its proper divisors (312311318918).

388716836890 is a wasteful number, since it uses less digits than its factorization.

388716836890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74324973.

The product of its (nonzero) digits is 83607552, while the sum is 67.

The spelling of 388716836890 in words is "three hundred eighty-eight billion, seven hundred sixteen million, eight hundred thirty-six thousand, eight hundred ninety".