245344543042540 has 96 divisors (see below), whose sum is σ = 528630005510208. Its totient is φ = 95591923200000.

The previous prime is 245344543042483. The next prime is 245344543042541. The reversal of 245344543042540 is 45240345443542.

It is a super-3 number, since 3×245344543042540³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (245344543042541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1618708360 + ... + 1618859920.

It is an arithmetic number, because the mean of its divisors is an integer number (5506562557398).

Almost surely, 2^{245344543042540} is an apocalyptic number.

245344543042540 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 245344543042540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264315002755104).

245344543042540 is an abundant number, since it is smaller than the sum of its proper divisors (283285462467668).

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

245344543042540 is a wasteful number, since it uses less digits than its factorization.

245344543042540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154739 (or 154737 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 49.

The spelling of 245344543042540 in words is "two hundred forty-five trillion, three hundred forty-four billion, five hundred forty-three million, forty-two thousand, five hundred forty".