136551406440 has 64 divisors (see below), whose sum is σ = 409680192960. Its totient is φ = 36411399680.

The previous prime is 136551406367. The next prime is 136551406457. The reversal of 136551406440 is 44604155631.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2770492 + ... + 2819348.

It is an arithmetic number, because the mean of its divisors is an integer number (6401253015).

Almost surely, 2^136551406440 is an apocalyptic number.

136551406440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136551406440 is an abundant number, since it is smaller than the sum of its proper divisors (273128786520).

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

136551406440 is a wasteful number, since it uses less digits than its factorization.

136551406440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72162 (or 72158 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 136551406440 in words is "one hundred thirty-six billion, five hundred fifty-one million, four hundred six thousand, four hundred forty".