21464766415400 has 96 divisors (see below), whose sum is σ = 62219946329280. Its totient is φ = 6690316800000.

The previous prime is 21464766415361. The next prime is 21464766415403. The reversal of 21464766415400 is 451466746412.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (21464766415403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696892601 + ... + 696923400.

It is an arithmetic number, because the mean of its divisors is an integer number (648124440930).

Almost surely, 2^{21464766415400} is an apocalyptic number.

21464766415400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21464766415400 is an abundant number, since it is smaller than the sum of its proper divisors (40755179913880).

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

21464766415400 is a wasteful number, since it uses less digits than its factorization.

21464766415400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393816035 (or 1393816026 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 21464766415400 in words is "twenty-one trillion, four hundred sixty-four billion, seven hundred sixty-six million, four hundred fifteen thousand, four hundred".