20770989120 has 168 divisors, whose sum is σ = 81649848384. Its totient is φ = 4747650048.

The previous prime is 20770989101. The next prime is 20770989193. The reversal of 20770989120 is 2198907702.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494994 + ... + 535313.

Almost surely, 2^20770989120 is an apocalyptic number.

20770989120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20770989120 is an abundant number, since it is smaller than the sum of its proper divisors (60878859264).

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

20770989120 is a wasteful number, since it uses less digits than its factorization.

20770989120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030337 (or 1030324 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 20770989120 in words is "twenty billion, seven hundred seventy million, nine hundred eighty-nine thousand, one hundred twenty".