113475178909 has 2 divisors, whose sum is σ = 113475178910. Its totient is φ = 113475178908.

The previous prime is 113475178879. The next prime is 113475178919. The reversal of 113475178909 is 909871574311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113158232100 + 316946809 = 336390^2 + 17803^2 .

It is a cyclic number.

It is not a de Polignac number, because 113475178909 - 2³¹ = 111327695261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113475178909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113475178919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56737589454 + 56737589455.

It is an arithmetic number, because the mean of its divisors is an integer number (56737589455).

Almost surely, 2^113475178909 is an apocalyptic number.

It is an amenable number.

113475178909 is a deficient number, since it is larger than the sum of its proper divisors (1).

113475178909 is an equidigital number, since it uses as much as digits as its factorization.

113475178909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 55.

The spelling of 113475178909 in words is "one hundred thirteen billion, four hundred seventy-five million, one hundred seventy-eight thousand, nine hundred nine".