20389077970 has 16 divisors (see below), whose sum is σ = 36743080320. Its totient is φ = 8146133424.

The previous prime is 20389077941. The next prime is 20389077977. The reversal of 20389077970 is 7977098302.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20389077977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178202 + ... + 1195381.

It is an arithmetic number, because the mean of its divisors is an integer number (2296442520).

Almost surely, 2^20389077970 is an apocalyptic number.

20389077970 is a deficient number, since it is larger than the sum of its proper divisors (16354002350).

20389077970 is a wasteful number, since it uses less digits than its factorization.

20389077970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374449.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 20389077970 in words is "twenty billion, three hundred eighty-nine million, seventy-seven thousand, nine hundred seventy".