20950769040 has 80 divisors (see below), whose sum is σ = 64981549248. Its totient is φ = 5583932928.

The previous prime is 20950769027. The next prime is 20950769089. The reversal of 20950769040 is 4096705902.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 20950768983 and 20950769001.

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, 454914 + ... + 498846.

Almost surely, 2^20950769040 is an apocalyptic number.

20950769040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20950769040 is an abundant number, since it is smaller than the sum of its proper divisors (44030780208).

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

20950769040 is a wasteful number, since it uses less digits than its factorization.

20950769040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45936 (or 45930 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 20950769040 in words is "twenty billion, nine hundred fifty million, seven hundred sixty-nine thousand, forty".