20514046511 has 4 divisors (see below), whose sum is σ = 23444624592. Its totient is φ = 17583468432.

The previous prime is 20514046499. The next prime is 20514046513. The reversal of 20514046511 is 11564041502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20514046511 is a prime.

It is a super-2 number, since 2×20514046511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20514046513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465289030 + ... + 1465289043.

It is an arithmetic number, because the mean of its divisors is an integer number (5861156148).

Almost surely, 2^20514046511 is an apocalyptic number.

20514046511 is a deficient number, since it is larger than the sum of its proper divisors (2930578081).

20514046511 is an equidigital number, since it uses as much as digits as its factorization.

20514046511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930578080.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 20514046511 in words is "twenty billion, five hundred fourteen million, forty-six thousand, five hundred eleven".