28981392695 has 4 divisors (see below), whose sum is σ = 34777671240. Its totient is φ = 23185114152.

The previous prime is 28981392689. The next prime is 28981392731. The reversal of 28981392695 is 59629318982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59629318982 = 2 ⋅29814659491.

It is a cyclic number.

It is not a de Polignac number, because 28981392695 - 2⁸ = 28981392439 is a prime.

It is a super-2 number, since 2×28981392695² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2898139265 + ... + 2898139274.

It is an arithmetic number, because the mean of its divisors is an integer number (8694417810).

Almost surely, 2^28981392695 is an apocalyptic number.

28981392695 is a deficient number, since it is larger than the sum of its proper divisors (5796278545).

28981392695 is an equidigital number, since it uses as much as digits as its factorization.

28981392695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5796278544.

The product of its digits is 16796160, while the sum is 62.

The spelling of 28981392695 in words is "twenty-eight billion, nine hundred eighty-one million, three hundred ninety-two thousand, six hundred ninety-five".