11540721630 has 16 divisors (see below), whose sum is σ = 27697731984. Its totient is φ = 3077525760.

The previous prime is 11540721611. The next prime is 11540721683. The reversal of 11540721630 is 3612704511.

It is a super-2 number, since 2×11540721630² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 384690721 = 11540721630 / (1 + 1 + 5 + 4 + 0 + 7 + 2 + 1 + 6 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192345331 + ... + 192345390.

It is an arithmetic number, because the mean of its divisors is an integer number (1731108249).

Almost surely, 2^11540721630 is an apocalyptic number.

11540721630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11540721630 is an abundant number, since it is smaller than the sum of its proper divisors (16157010354).

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

11540721630 is a wasteful number, since it uses less digits than its factorization.

11540721630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384690731.

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 11540721630 in words is "eleven billion, five hundred forty million, seven hundred twenty-one thousand, six hundred thirty".