20368642698 has 32 divisors (see below), whose sum is σ = 45272822400. Its totient is φ = 6788171808.

The previous prime is 20368642691. The next prime is 20368642699. The reversal of 20368642698 is 89624686302.

20368642698 is a `hidden beast` number, since 20 + 36 + 86 + 426 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (20368642691) 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, 250798 + ... + 321926.

It is an arithmetic number, because the mean of its divisors is an integer number (1414775700).

Almost surely, 2^20368642698 is an apocalyptic number.

20368642698 is an abundant number, since it is smaller than the sum of its proper divisors (24904179702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20368642698 is a wasteful number, since it uses less digits than its factorization.

20368642698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76443 (or 76437 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 20368642698 in words is "twenty billion, three hundred sixty-eight million, six hundred forty-two thousand, six hundred ninety-eight".