245973155220 has 120 divisors (see below), whose sum is σ = 830982884424. Its totient is φ = 60547233024.

The previous prime is 245973155147. The next prime is 245973155327. The reversal of 245973155220 is 22551379542.

245973155220 is a `hidden beast` number, since 2 + 4 + 5 + 9 + 73 + 1 + 552 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28983019536 + 216990135684 = 170244^2 + 465822^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5818759 + ... + 5860878.

Almost surely, 2^245973155220 is an apocalyptic number.

245973155220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245973155220 is an abundant number, since it is smaller than the sum of its proper divisors (585009729204).

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

245973155220 is a wasteful number, since it uses less digits than its factorization.

245973155220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679671 (or 11679660 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 245973155220 in words is "two hundred forty-five billion, nine hundred seventy-three million, one hundred fifty-five thousand, two hundred twenty".