145897242744 has 128 divisors (see below), whose sum is σ = 400349537280. Its totient is φ = 43940160000.

The previous prime is 145897242727. The next prime is 145897242761. The reversal of 145897242744 is 447242798541.

It is an interprime number because it is at equal distance from previous prime (145897242727) and next prime (145897242761).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30706369 + ... + 30711119.

It is an arithmetic number, because the mean of its divisors is an integer number (3127730760).

Almost surely, 2^145897242744 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 145897242744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200174768640).

145897242744 is an abundant number, since it is smaller than the sum of its proper divisors (254452294536).

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

145897242744 is a wasteful number, since it uses less digits than its factorization.

145897242744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461 (or 5457 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 57.

The spelling of 145897242744 in words is "one hundred forty-five billion, eight hundred ninety-seven million, two hundred forty-two thousand, seven hundred forty-four".