11138931552 has 96 divisors (see below), whose sum is σ = 34569158400. Its totient is φ = 3072803328.

The previous prime is 11138931527. The next prime is 11138931577. The reversal of 11138931552 is 25513983111.

It is an interprime number because it is at equal distance from previous prime (11138931527) and next prime (11138931577).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×11138931552² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11138931552.

It is a congruent number.

It is an unprimeable number.

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, 266302 + ... + 305277.

It is an arithmetic number, because the mean of its divisors is an integer number (360095400).

Almost surely, 2^11138931552 is an apocalyptic number.

11138931552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11138931552 is an abundant number, since it is smaller than the sum of its proper divisors (23430226848).

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

11138931552 is a wasteful number, since it uses less digits than its factorization.

11138931552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571628 (or 571620 counting only the distinct ones).

The product of its digits is 32400, while the sum is 39.

The spelling of 11138931552 in words is "eleven billion, one hundred thirty-eight million, nine hundred thirty-one thousand, five hundred fifty-two".