136421951634 has 48 divisors (see below), whose sum is σ = 306938117304. Its totient is φ = 43757107200.

The previous prime is 136421951629. The next prime is 136421951639. The reversal of 136421951634 is 436159124631.

136421951634 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 2 + 1 + 9 + 5 + 1 + 634 = 666.

It is an interprime number because it is at equal distance from previous prime (136421951629) and next prime (136421951639).

It can be written as a sum of positive squares in 4 ways, for example, as 99321413409 + 37100538225 = 315153^2 + 192615^2 .

It is a super-2 number, since 2×136421951634² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136421951634.

It is not an unprimeable number, because it can be changed into a prime (136421951639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1212247 + ... + 1319994.

Almost surely, 2^136421951634 is an apocalyptic number.

136421951634 is an abundant number, since it is smaller than the sum of its proper divisors (170516165670).

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

136421951634 is a wasteful number, since it uses less digits than its factorization.

136421951634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532363 (or 2532360 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 136421951634 in words is "one hundred thirty-six billion, four hundred twenty-one million, nine hundred fifty-one thousand, six hundred thirty-four".