11551201564 has 24 divisors (see below), whose sum is σ = 23326704128. Its totient is φ = 4902450480.

The previous prime is 11551201537. The next prime is 11551201567. The reversal of 11551201564 is 46510215511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551201567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999752 + ... + 2005519.

Almost surely, 2^11551201564 is an apocalyptic number.

11551201564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11551201564 is an abundant number, since it is smaller than the sum of its proper divisors (11775502564).

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

11551201564 is a wasteful number, since it uses less digits than its factorization.

11551201564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005385 (or 4005383 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 11551201564 in words is "eleven billion, five hundred fifty-one million, two hundred one thousand, five hundred sixty-four".