21485952360 has 96 divisors (see below), whose sum is σ = 69850839240. Its totient is φ = 5727823872.

The previous prime is 21485952359. The next prime is 21485952391. The reversal of 21485952360 is 6325958412.

21485952360 is a `hidden beast` number, since 2 + 1 + 485 + 95 + 23 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19599440004 + 1886512356 = 139998^2 + 43434^2 .

It is a super-2 number, since 2×21485952360² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1511044 + ... + 1525196.

Almost surely, 2^21485952360 is an apocalyptic number.

21485952360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21485952360 is an abundant number, since it is smaller than the sum of its proper divisors (48364886880).

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

21485952360 is a wasteful number, since it uses less digits than its factorization.

21485952360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18387 (or 18380 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 21485952360 in words is "twenty-one billion, four hundred eighty-five million, nine hundred fifty-two thousand, three hundred sixty".