11640362421 has 16 divisors (see below), whose sum is σ = 15762314880. Its totient is φ = 7640075520.

The previous prime is 11640362351. The next prime is 11640362497. The reversal of 11640362421 is 12426304611.

It is not a de Polignac number, because 11640362421 - 2²³ = 11631973813 is a prime.

It is a super-3 number, since 3×11640362421³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11640362021) 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, 31345 + ... + 155766.

It is an arithmetic number, because the mean of its divisors is an integer number (985144680).

Almost surely, 2^11640362421 is an apocalyptic number.

It is an amenable number.

11640362421 is a deficient number, since it is larger than the sum of its proper divisors (4121952459).

11640362421 is a wasteful number, since it uses less digits than its factorization.

11640362421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187436.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 11640362421 in words is "eleven billion, six hundred forty million, three hundred sixty-two thousand, four hundred twenty-one".