28537456117 has 8 divisors (see below), whose sum is σ = 28656713216. Its totient is φ = 28418437872.

The previous prime is 28537456109. The next prime is 28537456139. The reversal of 28537456117 is 71165473582.

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 28537456117 - 2³ = 28537456109 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 (28537456417) 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, 181768 + ... + 300190.

It is an arithmetic number, because the mean of its divisors is an integer number (3582089152).

Almost surely, 2^28537456117 is an apocalyptic number.

It is an amenable number.

28537456117 is a deficient number, since it is larger than the sum of its proper divisors (119257099).

28537456117 is a wasteful number, since it uses less digits than its factorization.

28537456117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119427.

The product of its digits is 1411200, while the sum is 49.

The spelling of 28537456117 in words is "twenty-eight billion, five hundred thirty-seven million, four hundred fifty-six thousand, one hundred seventeen".