165162662640 has 60 divisors (see below), whose sum is σ = 554671277784. Its totient is φ = 44043376512.

The previous prime is 165162662629. The next prime is 165162662653. The reversal of 165162662640 is 46266261561.

165162662640 is a `hidden beast` number, since 1 + 6 + 5 + 16 + 2 + 6 + 626 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114695574 + ... + 114697013.

Almost surely, 2^165162662640 is an apocalyptic number.

165162662640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165162662640 is an abundant number, since it is smaller than the sum of its proper divisors (389508615144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165162662640 is a wasteful number, since it uses less digits than its factorization.

165162662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229392606 (or 229392597 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 165162662640 in words is "one hundred sixty-five billion, one hundred sixty-two million, six hundred sixty-two thousand, six hundred forty".