11838777651 has 48 divisors (see below), whose sum is σ = 17497480000. Its totient is φ = 7712236800.

The previous prime is 11838777623. The next prime is 11838777707. The reversal of 11838777651 is 15677783811.

It is not a de Polignac number, because 11838777651 - 2¹¹ = 11838775603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11838777151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33921825 + ... + 33922173.

Almost surely, 2^11838777651 is an apocalyptic number.

11838777651 is a deficient number, since it is larger than the sum of its proper divisors (5658702349).

11838777651 is a wasteful number, since it uses less digits than its factorization.

11838777651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 841 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 54.

The spelling of 11838777651 in words is "eleven billion, eight hundred thirty-eight million, seven hundred seventy-seven thousand, six hundred fifty-one".