136991363146 has 24 divisors (see below), whose sum is σ = 225893573892. Its totient is φ = 62261179200.

The previous prime is 136991363081. The next prime is 136991363191. The reversal of 136991363146 is 641363199631.

It can be written as a sum of positive squares in 2 ways, for example, as 115150956921 + 21840406225 = 339339^2 + 147785^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 136991363093 and 136991363102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2259646 + ... + 2319478.

Almost surely, 2^136991363146 is an apocalyptic number.

136991363146 is a deficient number, since it is larger than the sum of its proper divisors (88902210746).

136991363146 is a wasteful number, since it uses less digits than its factorization.

136991363146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69318 (or 69307 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 52.

The spelling of 136991363146 in words is "one hundred thirty-six billion, nine hundred ninety-one million, three hundred sixty-three thousand, one hundred forty-six".