245072170000 has 400 divisors, whose sum is σ = 735654915072. Its totient is φ = 77137920000.

The previous prime is 245072169973. The next prime is 245072170019. The reversal of 245072170000 is 71270542.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 48787489 + ... + 48792511.

Almost surely, 2^245072170000 is an apocalyptic number.

245072170000 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 245072170000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367827457536).

245072170000 is an abundant number, since it is smaller than the sum of its proper divisors (490582745072).

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

245072170000 is a wasteful number, since it uses less digits than its factorization.

245072170000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116 (or 5095 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 28.

The spelling of 245072170000 in words is "two hundred forty-five billion, seventy-two million, one hundred seventy thousand".