136617049251 has 8 divisors (see below), whose sum is σ = 202395628560. Its totient is φ = 91078032816.

The previous prime is 136617049249. The next prime is 136617049277. The reversal of 136617049251 is 152940716631.

136617049251 is a `hidden beast` number, since 1 + 3 + 6 + 617 + 0 + 4 + 9 + 25 + 1 = 666.

It is not a de Polignac number, because 136617049251 - 2¹ = 136617049249 is a prime.

It is a super-2 number, since 2×136617049251² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136617049197 and 136617049206.

It is not an unprimeable number, because it can be changed into a prime (136617049291) 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, 2529945330 + ... + 2529945383.

It is an arithmetic number, because the mean of its divisors is an integer number (25299453570).

Almost surely, 2^136617049251 is an apocalyptic number.

136617049251 is a deficient number, since it is larger than the sum of its proper divisors (65778579309).

136617049251 is an equidigital number, since it uses as much as digits as its factorization.

136617049251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059890722 (or 5059890716 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 136617049251 in words is "one hundred thirty-six billion, six hundred seventeen million, forty-nine thousand, two hundred fifty-one".