23537775420 has 120 divisors (see below), whose sum is σ = 77049381024. Its totient is φ = 6003828864.

The previous prime is 23537775419. The next prime is 23537775467. The reversal of 23537775420 is 2457773532.

It is a happy number.

23537775420 is a `hidden beast` number, since 2 + 3 + 5 + 37 + 77 + 542 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 278599 + ... + 353118.

Almost surely, 2^23537775420 is an apocalyptic number.

23537775420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23537775420 is an abundant number, since it is smaller than the sum of its proper divisors (53511605604).

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

23537775420 is a wasteful number, since it uses less digits than its factorization.

23537775420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631761 (or 631750 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 45.

The spelling of 23537775420 in words is "twenty-three billion, five hundred thirty-seven million, seven hundred seventy-five thousand, four hundred twenty".