21246025038448 has 20 divisors (see below), whose sum is σ = 47044769728240. Its totient is φ = 9105439302144.

The previous prime is 21246025038409. The next prime is 21246025038487. The reversal of 21246025038448 is 84483052064212.

It is an interprime number because it is at equal distance from previous prime (21246025038409) and next prime (21246025038487).

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 3 ways as a sum of consecutive naturals, for example, 94848325953 + ... + 94848326176.

It is an arithmetic number, because the mean of its divisors is an integer number (2352238486412).

Almost surely, 2^{21246025038448} is an apocalyptic number.

21246025038448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21246025038448 is an abundant number, since it is smaller than the sum of its proper divisors (25798744689792).

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

21246025038448 is a wasteful number, since it uses less digits than its factorization.

21246025038448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189696652144 (or 189696652138 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 49.

The spelling of 21246025038448 in words is "twenty-one trillion, two hundred forty-six billion, twenty-five million, thirty-eight thousand, four hundred forty-eight".