136638627851 has 8 divisors (see below), whose sum is σ = 156905601600. Its totient is φ = 117679200840.

The previous prime is 136638627841. The next prime is 136638627947. The reversal of 136638627851 is 158726836631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136638627851 - 2¹⁰ = 136638626827 is a prime.

It is a super-2 number, since 2×136638627851² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136638627821) 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, 326886461 + ... + 326886878.

It is an arithmetic number, because the mean of its divisors is an integer number (19613200200).

Almost surely, 2^136638627851 is an apocalyptic number.

136638627851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136638627851 is a deficient number, since it is larger than the sum of its proper divisors (20266973749).

136638627851 is a wasteful number, since it uses less digits than its factorization.

136638627851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653773369.

The product of its digits is 8709120, while the sum is 56.

The spelling of 136638627851 in words is "one hundred thirty-six billion, six hundred thirty-eight million, six hundred twenty-seven thousand, eight hundred fifty-one".