13574021220 has 72 divisors (see below), whose sum is σ = 41210332800. Its totient is φ = 3616591680.

The previous prime is 13574021207. The next prime is 13574021233. The reversal of 13574021220 is 2212047531.

13574021220 is a `hidden beast` number, since 1 + 35 + 7 + 402 + 1 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (13574021207) and next prime (13574021233).

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, 178581 + ... + 242979.

Almost surely, 2^13574021220 is an apocalyptic number.

13574021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13574021220 is an abundant number, since it is smaller than the sum of its proper divisors (27636311580).

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

13574021220 is a wasteful number, since it uses less digits than its factorization.

13574021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65585 (or 65580 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

Adding to 13574021220 its reverse (2212047531), we get a palindrome (15786068751).

The spelling of 13574021220 in words is "thirteen billion, five hundred seventy-four million, twenty-one thousand, two hundred twenty".