113145455091 has 4 divisors (see below), whose sum is σ = 150860606792. Its totient is φ = 75430303392.

The previous prime is 113145455083. The next prime is 113145455113. The reversal of 113145455091 is 190554541311.

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

It is not a de Polignac number, because 113145455091 - 2³ = 113145455083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113145455021) 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, 18857575846 + ... + 18857575851.

It is an arithmetic number, because the mean of its divisors is an integer number (37715151698).

Almost surely, 2^113145455091 is an apocalyptic number.

113145455091 is a deficient number, since it is larger than the sum of its proper divisors (37715151701).

113145455091 is an equidigital number, since it uses as much as digits as its factorization.

113145455091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37715151700.

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 113145455091 in words is "one hundred thirteen billion, one hundred forty-five million, four hundred fifty-five thousand, ninety-one".