20450513019 has 8 divisors (see below), whose sum is σ = 27281136960. Its totient is φ = 13626782216.

The previous prime is 20450512993. The next prime is 20450513021. The reversal of 20450513019 is 91031505402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20450513019 - 2⁹ = 20450512507 is a prime.

It is a super-2 number, since 2×20450513019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20450513099) 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, 1716357 + ... + 1728230.

It is an arithmetic number, because the mean of its divisors is an integer number (3410142120).

Almost surely, 2^20450513019 is an apocalyptic number.

20450513019 is a deficient number, since it is larger than the sum of its proper divisors (6830623941).

20450513019 is a wasteful number, since it uses less digits than its factorization.

20450513019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446569.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 20450513019 in words is "twenty billion, four hundred fifty million, five hundred thirteen thousand, nineteen".