11537472261 has 16 divisors (see below), whose sum is σ = 17762159744. Its totient is φ = 6524872704.

The previous prime is 11537472227. The next prime is 11537472341. The reversal of 11537472261 is 16227473511.

It is not a de Polignac number, because 11537472261 - 2⁶ = 11537472197 is a prime.

It is a super-2 number, since 2×11537472261² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11537472211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2829940 + ... + 2834013.

It is an arithmetic number, because the mean of its divisors is an integer number (1110134984).

Almost surely, 2^11537472261 is an apocalyptic number.

It is an amenable number.

11537472261 is a deficient number, since it is larger than the sum of its proper divisors (6224687483).

11537472261 is an equidigital number, since it uses as much as digits as its factorization.

11537472261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5664060.

The product of its digits is 70560, while the sum is 39.

The spelling of 11537472261 in words is "eleven billion, five hundred thirty-seven million, four hundred seventy-two thousand, two hundred sixty-one".