21492623607 has 16 divisors (see below), whose sum is σ = 35269946880. Its totient is φ = 11336768352.

The previous prime is 21492623591. The next prime is 21492623629. The reversal of 21492623607 is 70632629412.

It is not a de Polignac number, because 21492623607 - 2⁴ = 21492623591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21492623657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39363507 + ... + 39364052.

It is an arithmetic number, because the mean of its divisors is an integer number (2204371680).

Almost surely, 2^21492623607 is an apocalyptic number.

21492623607 is a deficient number, since it is larger than the sum of its proper divisors (13777323273).

21492623607 is a wasteful number, since it uses less digits than its factorization.

21492623607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78727582.

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 21492623607 in words is "twenty-one billion, four hundred ninety-two million, six hundred twenty-three thousand, six hundred seven".