136517451990 has 32 divisors (see below), whose sum is σ = 329840834400. Its totient is φ = 36160326144.

The previous prime is 136517451953. The next prime is 136517452003. The reversal of 136517451990 is 99154715631.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15265939 + ... + 15274878.

It is an arithmetic number, because the mean of its divisors is an integer number (10307526075).

Almost surely, 2^136517451990 is an apocalyptic number.

136517451990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136517451990 is an abundant number, since it is smaller than the sum of its proper divisors (193323382410).

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

136517451990 is a wasteful number, since it uses less digits than its factorization.

136517451990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30540976.

The product of its (nonzero) digits is 1020600, while the sum is 51.

The spelling of 136517451990 in words is "one hundred thirty-six billion, five hundred seventeen million, four hundred fifty-one thousand, nine hundred ninety".