145299830648 has 64 divisors (see below), whose sum is σ = 315895749120. Its totient is φ = 61364419200.

The previous prime is 145299830639. The next prime is 145299830651. The reversal of 145299830648 is 846038992541.

It is a happy number.

It is a super-2 number, since 2×145299830648² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 9419390 + ... + 9434802.

It is an arithmetic number, because the mean of its divisors is an integer number (4935871080).

Almost surely, 2^145299830648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145299830648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157947874560).

145299830648 is an abundant number, since it is smaller than the sum of its proper divisors (170595918472).

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

145299830648 is a wasteful number, since it uses less digits than its factorization.

145299830648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868 (or 17864 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 145299830648 in words is "one hundred forty-five billion, two hundred ninety-nine million, eight hundred thirty thousand, six hundred forty-eight".