21359386370 has 64 divisors (see below), whose sum is σ = 47124737280. Its totient is φ = 6806861568.

The previous prime is 21359386297. The next prime is 21359386393. The reversal of 21359386370 is 7368395312.

It is a super-2 number, since 2×21359386370² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81017 + ... + 221996.

It is an arithmetic number, because the mean of its divisors is an integer number (736324020).

Almost surely, 2^21359386370 is an apocalyptic number.

21359386370 is an abundant number, since it is smaller than the sum of its proper divisors (25765350910).

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

21359386370 is a wasteful number, since it uses less digits than its factorization.

21359386370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303099.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 21359386370 in words is "twenty-one billion, three hundred fifty-nine million, three hundred eighty-six thousand, three hundred seventy".