905928552991 has 16 divisors (see below), whose sum is σ = 1136949308928. Its totient is φ = 701243388000.

The previous prime is 905928552959. The next prime is 905928553007. The reversal of 905928552991 is 199255829509.

It is a cyclic number.

It is not a de Polignac number, because 905928552991 - 2⁵ = 905928552959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905928552911) 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, 38946340 + ... + 38969593.

It is an arithmetic number, because the mean of its divisors is an integer number (71059331808).

Almost surely, 2^905928552991 is an apocalyptic number.

905928552991 is a deficient number, since it is larger than the sum of its proper divisors (231020755937).

905928552991 is a wasteful number, since it uses less digits than its factorization.

905928552991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77916102.

The product of its (nonzero) digits is 26244000, while the sum is 64.

The spelling of 905928552991 in words is "nine hundred five billion, nine hundred twenty-eight million, five hundred fifty-two thousand, nine hundred ninety-one".