21403632713023 has 16 divisors (see below), whose sum is σ = 23654602160640. Its totient is φ = 19204869441600.

The previous prime is 21403632713017. The next prime is 21403632713027. The reversal of 21403632713023 is 32031723630412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21403632713023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403632713027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33232518 + ... + 33870451.

It is an arithmetic number, because the mean of its divisors is an integer number (1478412635040).

Almost surely, 2^{21403632713023} is an apocalyptic number.

21403632713023 is a deficient number, since it is larger than the sum of its proper divisors (2250969447617).

21403632713023 is a wasteful number, since it uses less digits than its factorization.

21403632713023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67103358.

The product of its (nonzero) digits is 108864, while the sum is 37.

The spelling of 21403632713023 in words is "twenty-one trillion, four hundred three billion, six hundred thirty-two million, seven hundred thirteen thousand, twenty-three".