145255852920 has 128 divisors (see below), whose sum is σ = 437469984000. Its totient is φ = 38583874560.

The previous prime is 145255852909. The next prime is 145255852927. The reversal of 145255852920 is 29258552541.

It is a self number, because there is not a number n which added to its sum of digits gives 145255852920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145255852927) 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, 40674735 + ... + 40678305.

It is an arithmetic number, because the mean of its divisors is an integer number (3417734250).

Almost surely, 2^145255852920 is an apocalyptic number.

145255852920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145255852920 is an abundant number, since it is smaller than the sum of its proper divisors (292214131080).

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

145255852920 is a wasteful number, since it uses less digits than its factorization.

145255852920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813 (or 4809 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 48.

The spelling of 145255852920 in words is "one hundred forty-five billion, two hundred fifty-five million, eight hundred fifty-two thousand, nine hundred twenty".