165151715005 has 16 divisors (see below), whose sum is σ = 215511176880. Its totient is φ = 120988726272.

The previous prime is 165151714933. The next prime is 165151715023. The reversal of 165151715005 is 500517151561.

It can be written as a sum of positive squares in 8 ways, for example, as 33987503449 + 131164211556 = 184357^2 + 362166^2 .

It is a cyclic number.

It is not a de Polignac number, because 165151715005 - 2⁷ = 165151714877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26253090 + ... + 26259379.

It is an arithmetic number, because the mean of its divisors is an integer number (13469448555).

Almost surely, 2^165151715005 is an apocalyptic number.

It is an amenable number.

165151715005 is a deficient number, since it is larger than the sum of its proper divisors (50359461875).

165151715005 is a wasteful number, since it uses less digits than its factorization.

165151715005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52512528.

The product of its (nonzero) digits is 26250, while the sum is 37.

Adding to 165151715005 its reverse (500517151561), we get a palindrome (665668866566).

The spelling of 165151715005 in words is "one hundred sixty-five billion, one hundred fifty-one million, seven hundred fifteen thousand, five".