136631451420 has 72 divisors (see below), whose sum is σ = 414496686240. Its totient is φ = 36430838400.

The previous prime is 136631451377. The next prime is 136631451479. The reversal of 136631451420 is 24154136631.

136631451420 is a `hidden beast` number, since 1 + 3 + 6 + 631 + 4 + 5 + 14 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1710370 + ... + 1788470.

It is an arithmetic number, because the mean of its divisors is an integer number (5756898420).

Almost surely, 2^136631451420 is an apocalyptic number.

136631451420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136631451420 is an abundant number, since it is smaller than the sum of its proper divisors (277865234820).

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

136631451420 is a wasteful number, since it uses less digits than its factorization.

136631451420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87835 (or 87830 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 136631451420 in words is "one hundred thirty-six billion, six hundred thirty-one million, four hundred fifty-one thousand, four hundred twenty".