21410357673 has 16 divisors (see below), whose sum is σ = 28600724160. Its totient is φ = 14246808576.

The previous prime is 21410357653. The next prime is 21410357681. The reversal of 21410357673 is 37675301412.

It is not a de Polignac number, because 21410357673 - 2⁵ = 21410357641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21410357653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5917561 + ... + 5921177.

It is an arithmetic number, because the mean of its divisors is an integer number (1787545260).

Almost surely, 2^21410357673 is an apocalyptic number.

It is an amenable number.

21410357673 is a deficient number, since it is larger than the sum of its proper divisors (7190366487).

21410357673 is a wasteful number, since it uses less digits than its factorization.

21410357673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776.

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 21410357673 in words is "twenty-one billion, four hundred ten million, three hundred fifty-seven thousand, six hundred seventy-three".