21574367340 has 24 divisors (see below), whose sum is σ = 60408228720. Its totient is φ = 5753164608.

The previous prime is 21574367317. The next prime is 21574367351. The reversal of 21574367340 is 4376347512.

It is a super-2 number, since 2×21574367340² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21574367292 and 21574367301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179786335 + ... + 179786454.

It is an arithmetic number, because the mean of its divisors is an integer number (2517009530).

Almost surely, 2^21574367340 is an apocalyptic number.

21574367340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21574367340 is an abundant number, since it is smaller than the sum of its proper divisors (38833861380).

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

21574367340 is a wasteful number, since it uses less digits than its factorization.

21574367340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359572801 (or 359572799 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 21574367340 in words is "twenty-one billion, five hundred seventy-four million, three hundred sixty-seven thousand, three hundred forty".