52105311491 has 16 divisors (see below), whose sum is σ = 57185157600. Its totient is φ = 47255996928.

The previous prime is 52105311487. The next prime is 52105311509. The reversal of 52105311491 is 19411350125.

52105311491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 52105311491 - 2² = 52105311487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52105311421) 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, 147116 + ... + 354758.

It is an arithmetic number, because the mean of its divisors is an integer number (3574072350).

Almost surely, 2^52105311491 is an apocalyptic number.

52105311491 is a deficient number, since it is larger than the sum of its proper divisors (5079846109).

52105311491 is a wasteful number, since it uses less digits than its factorization.

52105311491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208198.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 52105311491 in words is "fifty-two billion, one hundred five million, three hundred eleven thousand, four hundred ninety-one".