11423705580 has 72 divisors (see below), whose sum is σ = 39602183712. Its totient is φ = 2611132416.

The previous prime is 11423705497. The next prime is 11423705603. The reversal of 11423705580 is 8550732411.

11423705580 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 3 + 70 + 5 + 580 = 666.

It is a super-3 number, since 3×11423705580³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4531957 + ... + 4534476.

Almost surely, 2^11423705580 is an apocalyptic number.

11423705580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11423705580 is an abundant number, since it is smaller than the sum of its proper divisors (28178478132).

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

11423705580 is a wasteful number, since it uses less digits than its factorization.

11423705580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066455 (or 9066450 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

It can be divided in two parts, 11423 and 705580, that added together give a triangular number (717003 = T₁₁₉₇).

The spelling of 11423705580 in words is "eleven billion, four hundred twenty-three million, seven hundred five thousand, five hundred eighty".