28610058610581 has 16 divisors (see below), whose sum is σ = 44774557620864. Its totient is φ = 15906750732864.

The previous prime is 28610058610571. The next prime is 28610058610613. The reversal of 28610058610581 is 18501685001682.

It is not a de Polignac number, because 28610058610581 - 2³¹ = 28607911126933 is a prime.

It is a super-2 number, since 2×28610058610581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28610058610571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18410590350 + ... + 18410591903.

It is an arithmetic number, because the mean of its divisors is an integer number (2798409851304).

Almost surely, 2^{28610058610581} is an apocalyptic number.

28610058610581 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28610058610581 is a deficient number, since it is larger than the sum of its proper divisors (16164499010283).

28610058610581 is a wasteful number, since it uses less digits than its factorization.

28610058610581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36821182300.

The product of its (nonzero) digits is 921600, while the sum is 51.

The spelling of 28610058610581 in words is "twenty-eight trillion, six hundred ten billion, fifty-eight million, six hundred ten thousand, five hundred eighty-one".