145385182291880 has 64 divisors (see below), whose sum is σ = 327506523054480. Its totient is φ = 58084770816000.

The previous prime is 145385182291841. The next prime is 145385182291933. The reversal of 145385182291880 is 88192281583541.

It can be written as a sum of positive squares in 8 ways, for example, as 133439601179236 + 11945581112644 = 11551606^2 + 3456238^2 .

It is a super-2 number, since 2×145385182291880² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757667150 + ... + 757859010.

Almost surely, 2^{145385182291880} is an apocalyptic number.

145385182291880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145385182291880 is an abundant number, since it is smaller than the sum of its proper divisors (182121340762600).

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

145385182291880 is a wasteful number, since it uses less digits than its factorization.

145385182291880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214350 (or 214346 counting only the distinct ones).

The product of its (nonzero) digits is 44236800, while the sum is 65.

The spelling of 145385182291880 in words is "one hundred forty-five trillion, three hundred eighty-five billion, one hundred eighty-two million, two hundred ninety-one thousand, eight hundred eighty".