20254317868 has 24 divisors (see below), whose sum is σ = 37023936768. Its totient is φ = 9676950096.

The previous prime is 20254317833. The next prime is 20254317869. The reversal of 20254317868 is 86871345202.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (20254317869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21546 + ... + 202417.

It is an arithmetic number, because the mean of its divisors is an integer number (1542664032).

Almost surely, 2^20254317868 is an apocalyptic number.

It is an amenable number.

20254317868 is a deficient number, since it is larger than the sum of its proper divisors (16769618900).

20254317868 is a wasteful number, since it uses less digits than its factorization.

20254317868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224973 (or 224971 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 20254317868 in words is "twenty billion, two hundred fifty-four million, three hundred seventeen thousand, eight hundred sixty-eight".