20789120946 has 16 divisors (see below), whose sum is σ = 45358082208. Its totient is φ = 6299733600.

The previous prime is 20789120941. The next prime is 20789120951. The reversal of 20789120946 is 64902198702.

It is an interprime number because it is at equal distance from previous prime (20789120941) and next prime (20789120951).

It is a junction number, because it is equal to n+sod(n) for n = 20789120895 and 20789120904.

It is not an unprimeable number, because it can be changed into a prime (20789120941) 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, 157493275 + ... + 157493406.

It is an arithmetic number, because the mean of its divisors is an integer number (2834880138).

Almost surely, 2^20789120946 is an apocalyptic number.

20789120946 is an abundant number, since it is smaller than the sum of its proper divisors (24568961262).

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

20789120946 is a wasteful number, since it uses less digits than its factorization.

20789120946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314986697.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 20789120946 in words is "twenty billion, seven hundred eighty-nine million, one hundred twenty thousand, nine hundred forty-six".