28861374993 has 32 divisors (see below), whose sum is σ = 43822190592. Its totient is φ = 16724822400.

The previous prime is 28861374991. The next prime is 28861375009. The reversal of 28861374993 is 39947316882.

It is not a de Polignac number, because 28861374993 - 2¹ = 28861374991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28861374991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2580333 + ... + 2591493.

It is an arithmetic number, because the mean of its divisors is an integer number (1369443456).

Almost surely, 2^28861374993 is an apocalyptic number.

28861374993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28861374993 is a deficient number, since it is larger than the sum of its proper divisors (14960815599).

28861374993 is a wasteful number, since it uses less digits than its factorization.

28861374993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14605.

The product of its digits is 15676416, while the sum is 60.

The spelling of 28861374993 in words is "twenty-eight billion, eight hundred sixty-one million, three hundred seventy-four thousand, nine hundred ninety-three".