11503763880 has 64 divisors (see below), whose sum is σ = 39441479040. Its totient is φ = 2629431552.

The previous prime is 11503763879. The next prime is 11503763893. The reversal of 11503763880 is 8836730511.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6846639 + ... + 6848318.

It is an arithmetic number, because the mean of its divisors is an integer number (616273110).

Almost surely, 2^11503763880 is an apocalyptic number.

11503763880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11503763880 is an abundant number, since it is smaller than the sum of its proper divisors (27937715160).

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

11503763880 is a wasteful number, since it uses less digits than its factorization.

11503763880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694978 (or 13694974 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 11503763880 in words is "eleven billion, five hundred three million, seven hundred sixty-three thousand, eight hundred eighty".