145872816488 has 32 divisors (see below), whose sum is σ = 312599338560. Its totient is φ = 62513975040.

The previous prime is 145872816457. The next prime is 145872816491. The reversal of 145872816488 is 884618278541.

It is a happy number.

It is a Cunningham number, because it is equal to 381933²-1.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 145872816488.

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, 1479995 + ... + 1575477.

It is an arithmetic number, because the mean of its divisors is an integer number (9768729330).

Almost surely, 2^145872816488 is an apocalyptic number.

It is an amenable number.

145872816488 is an abundant number, since it is smaller than the sum of its proper divisors (166726522072).

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

145872816488 is a wasteful number, since it uses less digits than its factorization.

145872816488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122777 (or 122773 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 62.

The spelling of 145872816488 in words is "one hundred forty-five billion, eight hundred seventy-two million, eight hundred sixteen thousand, four hundred eighty-eight".