162538015920 has 240 divisors, whose sum is σ = 611716823808. Its totient is φ = 34966056960.

The previous prime is 162538015889. The next prime is 162538015921. The reversal of 162538015920 is 29510835261.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (162538015921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 318135 + ... + 652905.

Almost surely, 2^162538015920 is an apocalyptic number.

162538015920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162538015920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305858411904).

162538015920 is an abundant number, since it is smaller than the sum of its proper divisors (449178807888).

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

162538015920 is a wasteful number, since it uses less digits than its factorization.

162538015920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334828 (or 334805 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 162538015920 in words is "one hundred sixty-two billion, five hundred thirty-eight million, fifteen thousand, nine hundred twenty".