245437164240 has 80 divisors (see below), whose sum is σ = 761264127168. Its totient is φ = 65414734848.

The previous prime is 245437164229. The next prime is 245437164257. The reversal of 245437164240 is 42461734542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 245437164192 and 245437164201.

It is a congruent number.

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, 174204 + ... + 721956.

Almost surely, 2^245437164240 is an apocalyptic number.

245437164240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245437164240 is an abundant number, since it is smaller than the sum of its proper divisors (515826962928).

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

245437164240 is a wasteful number, since it uses less digits than its factorization.

245437164240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549636 (or 549630 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

Adding to 245437164240 its reverse (42461734542), we get a palindrome (287898898782).

The spelling of 245437164240 in words is "two hundred forty-five billion, four hundred thirty-seven million, one hundred sixty-four thousand, two hundred forty".