11550504540 has 48 divisors (see below), whose sum is σ = 33456638880. Its totient is φ = 2973922560.

The previous prime is 11550504499. The next prime is 11550504541. The reversal of 11550504540 is 4540505511.

It is a super-2 number, since 2×11550504540² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11550504498 and 11550504507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550504541) 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, 3317371 + ... + 3320850.

It is an arithmetic number, because the mean of its divisors is an integer number (697013310).

Almost surely, 2^11550504540 is an apocalyptic number.

11550504540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11550504540 is an abundant number, since it is smaller than the sum of its proper divisors (21906134340).

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

11550504540 is a wasteful number, since it uses less digits than its factorization.

11550504540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6638262 (or 6638260 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 11550504540 in words is "eleven billion, five hundred fifty million, five hundred four thousand, five hundred forty".