21445453246404 has 48 divisors (see below), whose sum is σ = 55201779581760. Its totient is φ = 6425603965440.

The previous prime is 21445453246397. The next prime is 21445453246411. The reversal of 21445453246404 is 40464235454412.

It is an interprime number because it is at equal distance from previous prime (21445453246397) and next prime (21445453246411).

It is a super-3 number, since 3×21445453246404³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912716089 + ... + 912739584.

It is an arithmetic number, because the mean of its divisors is an integer number (1150037074620).

Almost surely, 2^{21445453246404} is an apocalyptic number.

It is an amenable number.

21445453246404 is an abundant number, since it is smaller than the sum of its proper divisors (33756326335356).

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

21445453246404 is a wasteful number, since it uses less digits than its factorization.

21445453246404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825455780 (or 1825455778 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 48.

The spelling of 21445453246404 in words is "twenty-one trillion, four hundred forty-five billion, four hundred fifty-three million, two hundred forty-six thousand, four hundred four".