20112920040 has 32 divisors (see below), whose sum is σ = 60338760480. Its totient is φ = 5363445312.

The previous prime is 20112920039. The next prime is 20112920057. The reversal of 20112920040 is 4002921102.

It is a junction number, because it is equal to n+sod(n) for n = 20112919989 and 20112920016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83803714 + ... + 83803953.

It is an arithmetic number, because the mean of its divisors is an integer number (1885586265).

Almost surely, 2^20112920040 is an apocalyptic number.

20112920040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112920040 is an abundant number, since it is smaller than the sum of its proper divisors (40225840440).

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

20112920040 is a wasteful number, since it uses less digits than its factorization.

20112920040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167607681 (or 167607677 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 20112920040 in words is "twenty billion, one hundred twelve million, nine hundred twenty thousand, forty".