245705407020 has 96 divisors (see below), whose sum is σ = 764528049600. Its totient is φ = 65511908352.

The previous prime is 245705406997. The next prime is 245705407037. The reversal of 245705407020 is 20704507542.

It is a happy number.

245705407020 is a `hidden beast` number, since 2 + 45 + 7 + 0 + 540 + 70 + 2 + 0 = 666.

245705407020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×245705407020² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4176852 + ... + 4235268.

It is an arithmetic number, because the mean of its divisors is an integer number (7963833850).

Almost surely, 2^245705407020 is an apocalyptic number.

245705407020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245705407020 is an abundant number, since it is smaller than the sum of its proper divisors (518822642580).

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

245705407020 is a wasteful number, since it uses less digits than its factorization.

245705407020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66224 (or 66216 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The spelling of 245705407020 in words is "two hundred forty-five billion, seven hundred five million, four hundred seven thousand, twenty".