136538421474 has 64 divisors (see below), whose sum is σ = 336442014720. Its totient is φ = 35972907840.

The previous prime is 136538421451. The next prime is 136538421571. The reversal of 136538421474 is 474124835631.

It is a super-2 number, since 2×136538421474² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401397 + ... + 658935.

It is an arithmetic number, because the mean of its divisors is an integer number (5256906480).

Almost surely, 2^136538421474 is an apocalyptic number.

136538421474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136538421474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168221007360).

136538421474 is an abundant number, since it is smaller than the sum of its proper divisors (199903593246).

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

136538421474 is a wasteful number, since it uses less digits than its factorization.

136538421474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258535.

The product of its digits is 1935360, while the sum is 48.

The spelling of 136538421474 in words is "one hundred thirty-six billion, five hundred thirty-eight million, four hundred twenty-one thousand, four hundred seventy-four".