220535474940 has 144 divisors (see below), whose sum is σ = 768181115520. Its totient is φ = 50649287040.

The previous prime is 220535474903. The next prime is 220535474969. The reversal of 220535474940 is 49474535022.

220535474940 is a `hidden beast` number, since 2 + 2 + 0 + 535 + 4 + 74 + 9 + 40 = 666.

It is a super-2 number, since 2×220535474940² (a number of 23 digits) contains 22 as substring.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2893474 + ... + 2968713.

It is an arithmetic number, because the mean of its divisors is an integer number (5334591080).

Almost surely, 2^220535474940 is an apocalyptic number.

220535474940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220535474940 is an abundant number, since it is smaller than the sum of its proper divisors (547645640580).

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

220535474940 is a wasteful number, since it uses less digits than its factorization.

220535474940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862232 (or 5862227 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 220535474940 in words is "two hundred twenty billion, five hundred thirty-five million, four hundred seventy-four thousand, nine hundred forty".