11853139861640 has 128 divisors (see below), whose sum is σ = 33623966764800. Its totient is φ = 3652973998080.

The previous prime is 11853139861637. The next prime is 11853139861669. The reversal of 11853139861640 is 4616893135811.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21346229 + ... + 21894468.

It is an arithmetic number, because the mean of its divisors is an integer number (262687240350).

Almost surely, 2^{11853139861640} is an apocalyptic number.

11853139861640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11853139861640 is an abundant number, since it is smaller than the sum of its proper divisors (21770826903160).

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

11853139861640 is a wasteful number, since it uses less digits than its factorization.

11853139861640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43240815 (or 43240811 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 11853139861640 in words is "eleven trillion, eight hundred fifty-three billion, one hundred thirty-nine million, eight hundred sixty-one thousand, six hundred forty".