156138319780 has 24 divisors (see below), whose sum is σ = 327901492800. Its totient is φ = 62453228640.

The previous prime is 156138319763. The next prime is 156138319781. The reversal of 156138319780 is 87913831651.

It is not an unprimeable number, because it can be changed into a prime (156138319781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570121 + ... + 798319.

It is an arithmetic number, because the mean of its divisors is an integer number (13662562200).

Almost surely, 2^156138319780 is an apocalyptic number.

156138319780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156138319780 is an abundant number, since it is smaller than the sum of its proper divisors (171763173020).

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

156138319780 is a wasteful number, since it uses less digits than its factorization.

156138319780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262419 (or 262417 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 156138319780 in words is "one hundred fifty-six billion, one hundred thirty-eight million, three hundred nineteen thousand, seven hundred eighty".