165151505560051 has 2 divisors, whose sum is σ = 165151505560052. Its totient is φ = 165151505560050.

The previous prime is 165151505560039. The next prime is 165151505560081. The reversal of 165151505560051 is 150065505151561.

It is a happy number.

165151505560051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165151505560051 - 2⁹ = 165151505559539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165151505559983 and 165151505560010.

It is not a weakly prime, because it can be changed into another prime (165151505560031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82575752780025 + 82575752780026.

It is an arithmetic number, because the mean of its divisors is an integer number (82575752780026).

Almost surely, 2^{165151505560051} is an apocalyptic number.

165151505560051 is a deficient number, since it is larger than the sum of its proper divisors (1).

165151505560051 is an equidigital number, since it uses as much as digits as its factorization.

165151505560051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 165151505560051 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, five hundred five million, five hundred sixty thousand, fifty-one".