165226461615431 has 4 divisors (see below), whose sum is σ = 165229119290664. Its totient is φ = 165223803940200.

The previous prime is 165226461615409. The next prime is 165226461615491. The reversal of 165226461615431 is 134516164622561.

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

It is a cyclic number.

It is not a de Polignac number, because 165226461615431 - 2¹⁴ = 165226461599047 is a prime.

It is a super-2 number, since 2×165226461615431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165226461615491) 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, 1328744360 + ... + 1328868701.

It is an arithmetic number, because the mean of its divisors is an integer number (41307279822666).

Almost surely, 2^{165226461615431} is an apocalyptic number.

165226461615431 is a deficient number, since it is larger than the sum of its proper divisors (2657675233).

165226461615431 is an equidigital number, since it uses as much as digits as its factorization.

165226461615431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657675232.

The product of its digits is 6220800, while the sum is 53.

The spelling of 165226461615431 in words is "one hundred sixty-five trillion, two hundred twenty-six billion, four hundred sixty-one million, six hundred fifteen thousand, four hundred thirty-one".