11920571053924 has 135 divisors (see below), whose sum is σ = 23458418883207. Its totient is φ = 5297918026752.

The previous prime is 11920571053921. The next prime is 11920571053933. The reversal of 11920571053924 is 42935017502911.

The square root of 11920571053924 is 3452618.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 9489591148324 + 2430979905600 = 3080518^2 + 1559160^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11920571053921) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 122892485044 + ... + 122892485140.

Almost surely, 2^{11920571053924} is an apocalyptic number.

11920571053924 is the 3452618-th square number.

It is an amenable number.

11920571053924 is a deficient number, since it is larger than the sum of its proper divisors (11537847829283).

11920571053924 is an frugal number, since it uses more digits than its factorization.

11920571053924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

Multiplying 11920571053924 by its sum of digits (49), we get a square (584107981642276 = 24168326²).

The spelling of 11920571053924 in words is "eleven trillion, nine hundred twenty billion, five hundred seventy-one million, fifty-three thousand, nine hundred twenty-four".