20893977000 has 768 divisors, whose sum is σ = 82903392000. Its totient is φ = 4852224000.

The previous prime is 20893976989. The next prime is 20893977011. The reversal of 20893977000 is 77939802.

It is an interprime number because it is at equal distance from previous prime (20893976989) and next prime (20893977011).

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 86696880 + ... + 86697120.

It is an arithmetic number, because the mean of its divisors is an integer number (107947125).

Almost surely, 2^20893977000 is an apocalyptic number.

20893977000 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 20893977000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41451696000).

20893977000 is an abundant number, since it is smaller than the sum of its proper divisors (62009415000).

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

20893977000 is a wasteful number, since it uses less digits than its factorization.

20893977000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 20893977000 in words is "twenty billion, eight hundred ninety-three million, nine hundred seventy-seven thousand".