28377019351 has 4 divisors (see below), whose sum is σ = 29292407104. Its totient is φ = 27461631600.

The previous prime is 28377019291. The next prime is 28377019381. The reversal of 28377019351 is 15391077382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28377019351 - 2²⁷ = 28242801623 is a prime.

It is a super-2 number, since 2×28377019351² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28377019381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457693830 + ... + 457693891.

It is an arithmetic number, because the mean of its divisors is an integer number (7323101776).

Almost surely, 2^28377019351 is an apocalyptic number.

28377019351 is a deficient number, since it is larger than the sum of its proper divisors (915387753).

28377019351 is an equidigital number, since it uses as much as digits as its factorization.

28377019351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915387752.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 28377019351 in words is "twenty-eight billion, three hundred seventy-seven million, nineteen thousand, three hundred fifty-one".