21426011464344 has 16 divisors (see below), whose sum is σ = 53565028660920. Its totient is φ = 7142003821440.

The previous prime is 21426011464331. The next prime is 21426011464349. The reversal of 21426011464344 is 44346411062412.

It is a junction number, because it is equal to n+sod(n) for n = 21426011464296 and 21426011464305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21426011464349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446375238817 + ... + 446375238864.

Almost surely, 2^{21426011464344} is an apocalyptic number.

21426011464344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21426011464344 is an abundant number, since it is smaller than the sum of its proper divisors (32139017196576).

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

21426011464344 is a wasteful number, since it uses less digits than its factorization.

21426011464344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892750477690 (or 892750477686 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 21426011464344 in words is "twenty-one trillion, four hundred twenty-six billion, eleven million, four hundred sixty-four thousand, three hundred forty-four".