113406377521 has 4 divisors (see below), whose sum is σ = 114529213044. Its totient is φ = 112283542000.

The previous prime is 113406377507. The next prime is 113406377537. The reversal of 113406377521 is 125773604311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99414090000 + 13992287521 = 315300^2 + 118289^2 .

It is a cyclic number.

It is not a de Polignac number, because 113406377521 - 2¹⁷ = 113406246449 is a prime.

It is a super-2 number, since 2×113406377521² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113406377551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561417610 + ... + 561417811.

It is an arithmetic number, because the mean of its divisors is an integer number (28632303261).

Almost surely, 2^113406377521 is an apocalyptic number.

It is an amenable number.

113406377521 is a deficient number, since it is larger than the sum of its proper divisors (1122835523).

113406377521 is a wasteful number, since it uses less digits than its factorization.

113406377521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122835522.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 113406377521 in words is "one hundred thirteen billion, four hundred six million, three hundred seventy-seven thousand, five hundred twenty-one".