21374457001464 has 32 divisors (see below), whose sum is σ = 61069877147520. Its totient is φ = 6106987714656.

The previous prime is 21374457001369. The next prime is 21374457001477. The reversal of 21374457001464 is 46410075447312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63614455194 + ... + 63614455529.

It is an arithmetic number, because the mean of its divisors is an integer number (1908433660860).

Almost surely, 2^{21374457001464} is an apocalyptic number.

21374457001464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21374457001464 is an abundant number, since it is smaller than the sum of its proper divisors (39695420146056).

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

21374457001464 is a wasteful number, since it uses less digits than its factorization.

21374457001464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127228910739 (or 127228910735 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 48.

The spelling of 21374457001464 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred fifty-seven million, one thousand, four hundred sixty-four".