145398422399 has 4 divisors (see below), whose sum is σ = 145399866264. Its totient is φ = 145396978536.

The previous prime is 145398422383. The next prime is 145398422401. The reversal of 145398422399 is 993224893541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993224893541 = 6619 ⋅150056639.

It is a cyclic number.

It is not a de Polignac number, because 145398422399 - 2⁴ = 145398422383 is a prime.

It is a super-2 number, since 2×145398422399² (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 (145398422599) 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, 558557 + ... + 776390.

It is an arithmetic number, because the mean of its divisors is an integer number (36349966566).

Almost surely, 2^145398422399 is an apocalyptic number.

145398422399 is a deficient number, since it is larger than the sum of its proper divisors (1443865).

145398422399 is a wasteful number, since it uses less digits than its factorization.

145398422399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443864.

The product of its digits is 16796160, while the sum is 59.

The spelling of 145398422399 in words is "one hundred forty-five billion, three hundred ninety-eight million, four hundred twenty-two thousand, three hundred ninety-nine".