136531519542 has 128 divisors (see below), whose sum is σ = 339358118400. Its totient is φ = 40328409600.

The previous prime is 136531519519. The next prime is 136531519547. The reversal of 136531519542 is 245915135631.

136531519542 is a `hidden beast` number, since 1 + 3 + 6 + 53 + 1 + 51 + 9 + 542 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136531519547) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42544834 + ... + 42548042.

It is an arithmetic number, because the mean of its divisors is an integer number (2651235300).

Almost surely, 2^136531519542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136531519542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169679059200).

136531519542 is an abundant number, since it is smaller than the sum of its proper divisors (202826598858).

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

136531519542 is a wasteful number, since it uses less digits than its factorization.

136531519542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5019 (or 5013 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The spelling of 136531519542 in words is "one hundred thirty-six billion, five hundred thirty-one million, five hundred nineteen thousand, five hundred forty-two".