28049318377 has 8 divisors (see below), whose sum is σ = 28408956800. Its totient is φ = 27689794704.

The previous prime is 28049318369. The next prime is 28049318387. The reversal of 28049318377 is 77381394082.

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 28049318377 - 2³ = 28049318369 is a prime.

It is a super-2 number, since 2×28049318377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28049318357) 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, 533338 + ... + 583564.

It is an arithmetic number, because the mean of its divisors is an integer number (3551119600).

Almost surely, 2^28049318377 is an apocalyptic number.

It is an amenable number.

28049318377 is a deficient number, since it is larger than the sum of its proper divisors (359638423).

28049318377 is an equidigital number, since it uses as much as digits as its factorization.

28049318377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57375.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 28049318377 in words is "twenty-eight billion, forty-nine million, three hundred eighteen thousand, three hundred seventy-seven".