245901907920 has 240 divisors, whose sum is σ = 819723462912. Its totient is φ = 60949324800.

The previous prime is 245901907919. The next prime is 245901907943. The reversal of 245901907920 is 29709109542.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 245901907920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4565145 + ... + 4618695.

Almost surely, 2^245901907920 is an apocalyptic number.

245901907920 is a gapful number since it is divisible by the number (20) 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 245901907920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409861731456).

245901907920 is an abundant number, since it is smaller than the sum of its proper divisors (573821554992).

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

245901907920 is a wasteful number, since it uses less digits than its factorization.

245901907920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53658 (or 53633 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 245901907920 in words is "two hundred forty-five billion, nine hundred one million, nine hundred seven thousand, nine hundred twenty".