11447874640 has 40 divisors (see below), whose sum is σ = 27773543808. Its totient is φ = 4380055680.

The previous prime is 11447874637. The next prime is 11447874701. The reversal of 11447874640 is 4647874411.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3108996 + ... + 3112675.

Almost surely, 2^11447874640 is an apocalyptic number.

11447874640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11447874640 is an abundant number, since it is smaller than the sum of its proper divisors (16325669168).

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

11447874640 is a wasteful number, since it uses less digits than its factorization.

11447874640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221707 (or 6221701 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 11447874640 in words is "eleven billion, four hundred forty-seven million, eight hundred seventy-four thousand, six hundred forty".