11540721632 has 24 divisors (see below), whose sum is σ = 24786323352. Its totient is φ = 5245782400.

The previous prime is 11540721611. The next prime is 11540721683. The reversal of 11540721632 is 23612704511.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16392719 + ... + 16393422.

It is an arithmetic number, because the mean of its divisors is an integer number (1032763473).

Almost surely, 2^11540721632 is an apocalyptic number.

It is an amenable number.

11540721632 is an abundant number, since it is smaller than the sum of its proper divisors (13245601720).

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

11540721632 is a wasteful number, since it uses less digits than its factorization.

11540721632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32786162 (or 32786154 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 11540721632 in words is "eleven billion, five hundred forty million, seven hundred twenty-one thousand, six hundred thirty-two".