11651907136 has 63 divisors (see below), whose sum is σ = 23528008443. Its totient is φ = 5725349760.

The previous prime is 11651907121. The next prime is 11651907139. The reversal of 11651907136 is 63170915611.

The square root of 11651907136 is 107944.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11651907139) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88945791 + ... + 88945921.

Almost surely, 2^11651907136 is an apocalyptic number.

11651907136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11651907136 is the 107944-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11651907136

11651907136 is an abundant number, since it is smaller than the sum of its proper divisors (11876101307).

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

11651907136 is an frugal number, since it uses more digits than its factorization.

11651907136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 11651907136 in words is "eleven billion, six hundred fifty-one million, nine hundred seven thousand, one hundred thirty-six".