21419374152 has 64 divisors (see below), whose sum is σ = 58649391360. Its totient is φ = 6464840000.

The previous prime is 21419374129. The next prime is 21419374153. The reversal of 21419374152 is 25147391412.

It is a self number, because there is not a number n which added to its sum of digits gives 21419374152.

It is not an unprimeable number, because it can be changed into a prime (21419374153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95358 + ... + 227885.

It is an arithmetic number, because the mean of its divisors is an integer number (916396740).

Almost surely, 2^21419374152 is an apocalyptic number.

21419374152 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21419374152 is an abundant number, since it is smaller than the sum of its proper divisors (37230017208).

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

21419374152 is a wasteful number, since it uses less digits than its factorization.

21419374152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323514 (or 323510 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The spelling of 21419374152 in words is "twenty-one billion, four hundred nineteen million, three hundred seventy-four thousand, one hundred fifty-two".