145505251543140 has 72 divisors (see below), whose sum is σ = 445916093957880. Its totient is φ = 38401385969664.

The previous prime is 145505251543081. The next prime is 145505251543159. The reversal of 145505251543140 is 41345152505541.

145505251543140 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 0 + 52 + 51 + 543 + 1 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50292464191524 + 95212787351616 = 7091718^2 + 9757704^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4166799595 + ... + 4166834514.

Almost surely, 2^{145505251543140} is an apocalyptic number.

145505251543140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145505251543140 is an abundant number, since it is smaller than the sum of its proper divisors (300410842414740).

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

145505251543140 is a wasteful number, since it uses less digits than its factorization.

145505251543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333634221 (or 8333634216 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 45.

The spelling of 145505251543140 in words is "one hundred forty-five trillion, five hundred five billion, two hundred fifty-one million, five hundred forty-three thousand, one hundred forty".