245155524520 has 32 divisors (see below), whose sum is σ = 555252923520. Its totient is φ = 97412788800.

The previous prime is 245155524503. The next prime is 245155524571. The reversal of 245155524520 is 25425551542.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20288292 + ... + 20300371.

It is an arithmetic number, because the mean of its divisors is an integer number (17351653860).

Almost surely, 2^245155524520 is an apocalyptic number.

245155524520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245155524520 is an abundant number, since it is smaller than the sum of its proper divisors (310097399000).

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

245155524520 is a wasteful number, since it uses less digits than its factorization.

245155524520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40588825 (or 40588821 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 40.

The spelling of 245155524520 in words is "two hundred forty-five billion, one hundred fifty-five million, five hundred twenty-four thousand, five hundred twenty".