21574084513000 has 32 divisors (see below), whose sum is σ = 50483357762760. Its totient is φ = 8629633804800.

The previous prime is 21574084512989. The next prime is 21574084513001. The reversal of 21574084513000 is 31548047512.

It can be written as a sum of positive squares in 4 ways, for example, as 11942235708516 + 9631848804484 = 3455754^2 + 3103522^2 .

It is a super-2 number, since 2×21574084513000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (21574084513001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10787041257 + ... + 10787043256.

Almost surely, 2^{21574084513000} is an apocalyptic number.

21574084513000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21574084513000 is an abundant number, since it is smaller than the sum of its proper divisors (28909273249760).

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

21574084513000 is a wasteful number, since it uses less digits than its factorization.

21574084513000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21574084534 (or 21574084520 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 21574084513000 in words is "twenty-one trillion, five hundred seventy-four billion, eighty-four million, five hundred thirteen thousand".