11773628640 has 120 divisors (see below), whose sum is σ = 41551143480. Its totient is φ = 3139630848.

The previous prime is 11773628617. The next prime is 11773628641. The reversal of 11773628640 is 4682637711.

11773628640 is a `hidden beast` number, since 1 + 17 + 7 + 3 + 628 + 6 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11773628641) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 441270 + ... + 467189.

It is an arithmetic number, because the mean of its divisors is an integer number (346259529).

Almost surely, 2^11773628640 is an apocalyptic number.

11773628640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11773628640 is an abundant number, since it is smaller than the sum of its proper divisors (29777514840).

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

11773628640 is an equidigital number, since it uses as much as digits as its factorization.

11773628640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908486 (or 908469 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 11773628640 in words is "eleven billion, seven hundred seventy-three million, six hundred twenty-eight thousand, six hundred forty".