38664261942 has 32 divisors (see below), whose sum is σ = 77737342464. Its totient is φ = 12820130400.

The previous prime is 38664261931. The next prime is 38664261947. The reversal of 38664261942 is 24916246683.

It is a super-2 number, since 2×38664261942² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38664261947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854467 + ... + 898577.

It is an arithmetic number, because the mean of its divisors is an integer number (2429291952).

Almost surely, 2^38664261942 is an apocalyptic number.

38664261942 is an abundant number, since it is smaller than the sum of its proper divisors (39073080522).

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

38664261942 is a wasteful number, since it uses less digits than its factorization.

38664261942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44884.

The product of its digits is 2985984, while the sum is 51.

The spelling of 38664261942 in words is "thirty-eight billion, six hundred sixty-four million, two hundred sixty-one thousand, nine hundred forty-two".