21426011464297 has 32 divisors (see below), whose sum is σ = 25380301224960. Its totient is φ = 17889586249920.

The previous prime is 21426011464219. The next prime is 21426011464331. The reversal of 21426011464297 is 79246411062412.

It is a de Polignac number, because none of the positive numbers 2^k-21426011464297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21426011464297.

It is not an unprimeable number, because it can be changed into a prime (21426011464397) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16048678 + ... + 17332399.

It is an arithmetic number, because the mean of its divisors is an integer number (793134413280).

Almost surely, 2^{21426011464297} is an apocalyptic number.

It is an amenable number.

21426011464297 is a deficient number, since it is larger than the sum of its proper divisors (3954289760663).

21426011464297 is a wasteful number, since it uses less digits than its factorization.

21426011464297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33381213.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 21426011464297 in words is "twenty-one trillion, four hundred twenty-six billion, eleven million, four hundred sixty-four thousand, two hundred ninety-seven".