145505502120 has 64 divisors (see below), whose sum is σ = 476199829440. Its totient is φ = 35274060800.

The previous prime is 145505502113. The next prime is 145505502139. The reversal of 145505502120 is 21205505541.

It is a super-2 number, since 2×145505502120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55114401 + ... + 55117040.

It is an arithmetic number, because the mean of its divisors is an integer number (7440622335).

Almost surely, 2^145505502120 is an apocalyptic number.

145505502120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145505502120 is an abundant number, since it is smaller than the sum of its proper divisors (330694327320).

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

145505502120 is a wasteful number, since it uses less digits than its factorization.

145505502120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110231466 (or 110231462 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 145505502120 in words is "one hundred forty-five billion, five hundred five million, five hundred two thousand, one hundred twenty".