20770000888 has 32 divisors (see below), whose sum is σ = 47930772960. Its totient is φ = 8216703360.

The previous prime is 20770000859. The next prime is 20770000907. The reversal of 20770000888 is 88800007702.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20770000888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14264383 + ... + 14265838.

It is an arithmetic number, because the mean of its divisors is an integer number (1497836655).

Almost surely, 2^20770000888 is an apocalyptic number.

20770000888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20770000888 is an abundant number, since it is smaller than the sum of its proper divisors (27160772072).

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

20770000888 is a wasteful number, since it uses less digits than its factorization.

20770000888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28530247 (or 28530243 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The spelling of 20770000888 in words is "twenty billion, seven hundred seventy million, eight hundred eighty-eight", and thus it is an aban number.