20770858540 has 48 divisors (see below), whose sum is σ = 44442478080. Its totient is φ = 8152747200.

The previous prime is 20770858499. The next prime is 20770858547. The reversal of 20770858540 is 4585807702.

It is not an unprimeable number, because it can be changed into a prime (20770858547) 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, 217215 + ... + 297865.

It is an arithmetic number, because the mean of its divisors is an integer number (925884960).

Almost surely, 2^20770858540 is an apocalyptic number.

20770858540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20770858540 is an abundant number, since it is smaller than the sum of its proper divisors (23671619540).

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

20770858540 is a wasteful number, since it uses less digits than its factorization.

20770858540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80902 (or 80900 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The spelling of 20770858540 in words is "twenty billion, seven hundred seventy million, eight hundred fifty-eight thousand, five hundred forty".