20474698680 has 192 divisors, whose sum is σ = 74165738400. Its totient is φ = 4868259840.

The previous prime is 20474698637. The next prime is 20474698687. The reversal of 20474698680 is 8689647402.

20474698680 is a `hidden beast` number, since 2 + 0 + 474 + 6 + 98 + 6 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20474698687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28240 + ... + 204320.

Almost surely, 2^20474698680 is an apocalyptic number.

20474698680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20474698680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37082869200).

20474698680 is an abundant number, since it is smaller than the sum of its proper divisors (53691039720).

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

20474698680 is a wasteful number, since it uses less digits than its factorization.

20474698680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176134 (or 176127 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 20474698680 in words is "twenty billion, four hundred seventy-four million, six hundred ninety-eight thousand, six hundred eighty".