28351265660504 has 16 divisors (see below), whose sum is σ = 53176624723320. Its totient is φ = 14170832400960.

The previous prime is 28351265660489. The next prime is 28351265660507. The reversal of 28351265660504 is 40506656215382.

It is a super-2 number, since 2×28351265660504² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28351265660507) 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, 600028562 + ... + 600075809.

Almost surely, 2^{28351265660504} is an apocalyptic number.

It is an amenable number.

28351265660504 is a deficient number, since it is larger than the sum of its proper divisors (24825359062816).

28351265660504 is a wasteful number, since it uses less digits than its factorization.

28351265660504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200107330 (or 1200107326 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 28351265660504 in words is "twenty-eight trillion, three hundred fifty-one billion, two hundred sixty-five million, six hundred sixty thousand, five hundred four".