28135225767 has 12 divisors (see below), whose sum is σ = 41233995320. Its totient is φ = 17051651760.

The previous prime is 28135225751. The next prime is 28135225813. The reversal of 28135225767 is 76752253182.

It is not a de Polignac number, because 28135225767 - 2⁴ = 28135225751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135225067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38753392 + ... + 38754117.

Almost surely, 2^28135225767 is an apocalyptic number.

28135225767 is a deficient number, since it is larger than the sum of its proper divisors (13098769553).

28135225767 is a wasteful number, since it uses less digits than its factorization.

28135225767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77507534 (or 77507523 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The spelling of 28135225767 in words is "twenty-eight billion, one hundred thirty-five million, two hundred twenty-five thousand, seven hundred sixty-seven".