245759435491 has 4 divisors (see below), whose sum is σ = 245761377184. Its totient is φ = 245757493800.

The previous prime is 245759435483. The next prime is 245759435501. The reversal of 245759435491 is 194534957542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245759435491 - 2³ = 245759435483 is a prime.

It is a super-2 number, since 2×245759435491² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245759435591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766680 + ... + 1038901.

It is an arithmetic number, because the mean of its divisors is an integer number (61440344296).

Almost surely, 2^245759435491 is an apocalyptic number.

245759435491 is a deficient number, since it is larger than the sum of its proper divisors (1941693).

245759435491 is a wasteful number, since it uses less digits than its factorization.

245759435491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941692.

The product of its digits is 27216000, while the sum is 58.

The spelling of 245759435491 in words is "two hundred forty-five billion, seven hundred fifty-nine million, four hundred thirty-five thousand, four hundred ninety-one".