113554140021 has 18 divisors (see below), whose sum is σ = 190801855062. Its totient is φ = 64888079760.

The previous prime is 113554139969. The next prime is 113554140023. The reversal of 113554140021 is 120041455311.

113554140021 is a `hidden beast` number, since 113 + 5 + 541 + 4 + 0 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 113376317796 + 177822225 = 336714^2 + 13335^2 .

It is not a de Polignac number, because 113554140021 - 2¹¹ = 113554137973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113554140023) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 128745750 + ... + 128746631.

It is an arithmetic number, because the mean of its divisors is an integer number (10600103059).

Almost surely, 2^113554140021 is an apocalyptic number.

It is an amenable number.

113554140021 is a deficient number, since it is larger than the sum of its proper divisors (77247715041).

113554140021 is a wasteful number, since it uses less digits than its factorization.

113554140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257492401 (or 257492391 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 113554140021 its reverse (120041455311), we get a palindrome (233595595332).

The spelling of 113554140021 in words is "one hundred thirteen billion, five hundred fifty-four million, one hundred forty thousand, twenty-one".