28149254993079 has 96 divisors (see below), whose sum is σ = 46437760512000. Its totient is φ = 16264563194880.

The previous prime is 28149254993071. The next prime is 28149254993099. The reversal of 28149254993079 is 97039945294182.

28149254993079 is a `hidden beast` number, since 2 + 8 + 1 + 4 + 9 + 2 + 549 + 9 + 3 + 0 + 79 = 666.

It is not a de Polignac number, because 28149254993079 - 2³ = 28149254993071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28149254992998 and 28149254993016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149254993071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4050831897 + ... + 4050838845.

It is an arithmetic number, because the mean of its divisors is an integer number (483726672000).

Almost surely, 2^{28149254993079} is an apocalyptic number.

28149254993079 is a deficient number, since it is larger than the sum of its proper divisors (18288505518921).

28149254993079 is a wasteful number, since it uses less digits than its factorization.

28149254993079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12605 (or 12602 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 28149254993079 in words is "twenty-eight trillion, one hundred forty-nine billion, two hundred fifty-four million, nine hundred ninety-three thousand, seventy-nine".