145357889023 has 4 divisors (see below), whose sum is σ = 146769130768. Its totient is φ = 143946647280.

The previous prime is 145357889011. The next prime is 145357889119. The reversal of 145357889023 is 320988753541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320988753541 = 79 ⋅4063148779.

It is a cyclic number.

It is not a de Polignac number, because 145357889023 - 2³³ = 136767954431 is a prime.

It is a super-2 number, since 2×145357889023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145357889423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705620718 + ... + 705620923.

It is an arithmetic number, because the mean of its divisors is an integer number (36692282692).

Almost surely, 2^145357889023 is an apocalyptic number.

145357889023 is a deficient number, since it is larger than the sum of its proper divisors (1411241745).

145357889023 is a wasteful number, since it uses less digits than its factorization.

145357889023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411241744.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 145357889023 in words is "one hundred forty-five billion, three hundred fifty-seven million, eight hundred eighty-nine thousand, twenty-three".