245870691744 has 96 divisors (see below), whose sum is σ = 649668720960. Its totient is φ = 81417388032.

The previous prime is 245870691733. The next prime is 245870691751. The reversal of 245870691744 is 447196078542.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13683214 + ... + 13701170.

It is an arithmetic number, because the mean of its divisors is an integer number (6767382510).

Almost surely, 2^245870691744 is an apocalyptic number.

245870691744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245870691744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324834360480).

245870691744 is an abundant number, since it is smaller than the sum of its proper divisors (403798029216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245870691744 is a wasteful number, since it uses less digits than its factorization.

245870691744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18902 (or 18894 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 245870691744 in words is "two hundred forty-five billion, eight hundred seventy million, six hundred ninety-one thousand, seven hundred forty-four".