20767358976 has 240 divisors, whose sum is σ = 68172136704. Its totient is φ = 5475926016.

The previous prime is 20767358951. The next prime is 20767358987. The reversal of 20767358976 is 67985376702.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4470511 + ... + 4475153.

Almost surely, 2^20767358976 is an apocalyptic number.

20767358976 is a gapful number since it is divisible by the number (26) 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 20767358976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34086068352).

20767358976 is an abundant number, since it is smaller than the sum of its proper divisors (47404777728).

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

20767358976 is an equidigital number, since it uses as much as digits as its factorization.

20767358976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694 (or 4668 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 20767358976 in words is "twenty billion, seven hundred sixty-seven million, three hundred fifty-eight thousand, nine hundred seventy-six".