20519013100 has 36 divisors (see below), whose sum is σ = 44532555984. Its totient is φ = 8206444480.

The previous prime is 20519013079. The next prime is 20519013103. The reversal of 20519013100 is 131091502.

It is a super-2 number, since 2×20519013100² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20519013103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1211289 + ... + 1228111.

It is an arithmetic number, because the mean of its divisors is an integer number (1237015444).

Almost surely, 2^20519013100 is an apocalyptic number.

20519013100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20519013100 is an abundant number, since it is smaller than the sum of its proper divisors (24013542884).

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

20519013100 is a wasteful number, since it uses less digits than its factorization.

20519013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29034 (or 29027 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 22.

The spelling of 20519013100 in words is "twenty billion, five hundred nineteen million, thirteen thousand, one hundred".