145317786337 has 4 divisors (see below), whose sum is σ = 150005456896. Its totient is φ = 140630115780.

The previous prime is 145317786323. The next prime is 145317786359. The reversal of 145317786337 is 733687713541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 733687713541 = 29 ⋅25299576329.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145317786337 is a prime.

It is a super-2 number, since 2×145317786337² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145317780337) 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, 2343835233 + ... + 2343835294.

It is an arithmetic number, because the mean of its divisors is an integer number (37501364224).

Almost surely, 2^145317786337 is an apocalyptic number.

It is an amenable number.

145317786337 is a deficient number, since it is larger than the sum of its proper divisors (4687670559).

145317786337 is an equidigital number, since it uses as much as digits as its factorization.

145317786337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687670558.

The product of its digits is 8890560, while the sum is 55.

The spelling of 145317786337 in words is "one hundred forty-five billion, three hundred seventeen million, seven hundred eighty-six thousand, three hundred thirty-seven".