20152315423 has 16 divisors (see below), whose sum is σ = 21765058560. Its totient is φ = 18590656896.

The previous prime is 20152315373. The next prime is 20152315427. The reversal of 20152315423 is 32451325102.

It is a cyclic number.

It is not a de Polignac number, because 20152315423 - 2⁹ = 20152314911 is a prime.

It is a super-2 number, since 2×20152315423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20152315391 and 20152315400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152315427) 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, 122968 + ... + 235426.

It is an arithmetic number, because the mean of its divisors is an integer number (1360316160).

Almost surely, 2^20152315423 is an apocalyptic number.

20152315423 is a deficient number, since it is larger than the sum of its proper divisors (1612743137).

20152315423 is a wasteful number, since it uses less digits than its factorization.

20152315423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112686.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20152315423 in words is "twenty billion, one hundred fifty-two million, three hundred fifteen thousand, four hundred twenty-three".