245312451345420 has 72 divisors (see below), whose sum is σ = 762263568349920. Its totient is φ = 63821125551360.

The previous prime is 245312451345389. The next prime is 245312451345587. The reversal of 245312451345420 is 24543154213542.

245312451345420 is a `hidden beast` number, since 2 + 4 + 5 + 3 + 1 + 24 + 51 + 34 + 542 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16620077400 + ... + 16620092159.

It is an arithmetic number, because the mean of its divisors is an integer number (10586994004860).

Almost surely, 2^{245312451345420} is an apocalyptic number.

245312451345420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245312451345420 is an abundant number, since it is smaller than the sum of its proper divisors (516951117004500).

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

245312451345420 is a wasteful number, since it uses less digits than its factorization.

245312451345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33240169615 (or 33240169610 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 45.

The spelling of 245312451345420 in words is "two hundred forty-five trillion, three hundred twelve billion, four hundred fifty-one million, three hundred forty-five thousand, four hundred twenty".