165162178530 has 24 divisors (see below), whose sum is σ = 429421664412. Its totient is φ = 44043247584.

The previous prime is 165162178501. The next prime is 165162178547. The reversal of 165162178530 is 35871261561.

165162178530 is a `hidden beast` number, since 1 + 6 + 51 + 62 + 1 + 7 + 8 + 530 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 159505183161 + 5656995369 = 399381^2 + 75213^2 .

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

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, 917567569 + ... + 917567748.

Almost surely, 2^165162178530 is an apocalyptic number.

165162178530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165162178530 is an abundant number, since it is smaller than the sum of its proper divisors (264259485882).

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

165162178530 is a wasteful number, since it uses less digits than its factorization.

165162178530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835135330 (or 1835135327 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 165162178530 in words is "one hundred sixty-five billion, one hundred sixty-two million, one hundred seventy-eight thousand, five hundred thirty".