11938942428720 has 80 divisors (see below), whose sum is σ = 38204615795712. Its totient is φ = 3081017399040.

The previous prime is 11938942428713. The next prime is 11938942428727. The reversal of 11938942428720 is 2782424983911.

It is an interprime number because it is at equal distance from previous prime (11938942428713) and next prime (11938942428727).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×11938942428720² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (11938942428727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802340842 + ... + 802355721.

Almost surely, 2^{11938942428720} is an apocalyptic number.

11938942428720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11938942428720 is an abundant number, since it is smaller than the sum of its proper divisors (26265673366992).

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

11938942428720 is a wasteful number, since it uses less digits than its factorization.

11938942428720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604696610 (or 1604696604 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 11938942428720 in words is "eleven trillion, nine hundred thirty-eight billion, nine hundred forty-two million, four hundred twenty-eight thousand, seven hundred twenty".