20492215723 has 8 divisors (see below), whose sum is σ = 24437922048. Its totient is φ = 16801071144.

The previous prime is 20492215717. The next prime is 20492215739. The reversal of 20492215723 is 32751229402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20492215723 - 2¹⁷ = 20492084651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20492215703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63640261 + ... + 63640582.

It is an arithmetic number, because the mean of its divisors is an integer number (3054740256).

Almost surely, 2^20492215723 is an apocalyptic number.

20492215723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20492215723 is a deficient number, since it is larger than the sum of its proper divisors (3945706325).

20492215723 is a wasteful number, since it uses less digits than its factorization.

20492215723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127280873.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 20492215723 in words is "twenty billion, four hundred ninety-two million, two hundred fifteen thousand, seven hundred twenty-three".