40177290121 has 4 divisors (see below), whose sum is σ = 40858261200. Its totient is φ = 39496319044.

The previous prime is 40177290107. The next prime is 40177290133. The reversal of 40177290121 is 12109277104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40177290121 - 2⁵ = 40177290089 is a prime.

It is a super-2 number, since 2×40177290121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40177290521) 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, 340485451 + ... + 340485568.

It is an arithmetic number, because the mean of its divisors is an integer number (10214565300).

Almost surely, 2^40177290121 is an apocalyptic number.

It is an amenable number.

40177290121 is a deficient number, since it is larger than the sum of its proper divisors (680971079).

40177290121 is an equidigital number, since it uses as much as digits as its factorization.

40177290121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680971078.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 40177290121 in words is "forty billion, one hundred seventy-seven million, two hundred ninety thousand, one hundred twenty-one".