136355191940 has 24 divisors (see below), whose sum is σ = 312377349312. Its totient is φ = 49583706080.

The previous prime is 136355191937. The next prime is 136355191943. The reversal of 136355191940 is 49191553631.

It is an interprime number because it is at equal distance from previous prime (136355191937) and next prime (136355191943).

It is not an unprimeable number, because it can be changed into a prime (136355191943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309897944 + ... + 309898383.

It is an arithmetic number, because the mean of its divisors is an integer number (13015722888).

Almost surely, 2^136355191940 is an apocalyptic number.

136355191940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136355191940 is an abundant number, since it is smaller than the sum of its proper divisors (176022157372).

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

136355191940 is a wasteful number, since it uses less digits than its factorization.

136355191940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619796347 (or 619796345 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 47.

The spelling of 136355191940 in words is "one hundred thirty-six billion, three hundred fifty-five million, one hundred ninety-one thousand, nine hundred forty".