165012501270 has 64 divisors (see below), whose sum is σ = 400426177536. Its totient is φ = 43517550720.

The previous prime is 165012501239. The next prime is 165012501307. The reversal of 165012501270 is 72105210561.

165012501270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165012501270² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 903375 + ... + 1070565.

It is an arithmetic number, because the mean of its divisors is an integer number (6256659024).

Almost surely, 2^165012501270 is an apocalyptic number.

165012501270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165012501270 is an abundant number, since it is smaller than the sum of its proper divisors (235413676266).

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

165012501270 is a wasteful number, since it uses less digits than its factorization.

165012501270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167565.

The product of its (nonzero) digits is 4200, while the sum is 30.

The spelling of 165012501270 in words is "one hundred sixty-five billion, twelve million, five hundred one thousand, two hundred seventy".