20770842042 has 32 divisors (see below), whose sum is σ = 46213204800. Its totient is φ = 6915247344.

The previous prime is 20770842019. The next prime is 20770842067. The reversal of 20770842042 is 24024807702.

It is a junction number, because it is equal to n+sod(n) for n = 20770841988 and 20770842006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187228 + ... + 276759.

It is an arithmetic number, because the mean of its divisors is an integer number (1444162650).

Almost surely, 2^20770842042 is an apocalyptic number.

20770842042 is an abundant number, since it is smaller than the sum of its proper divisors (25442362758).

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

20770842042 is a wasteful number, since it uses less digits than its factorization.

20770842042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464827 (or 464821 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The spelling of 20770842042 in words is "twenty billion, seven hundred seventy million, eight hundred forty-two thousand, forty-two".