145715550397 has 4 divisors (see below), whose sum is σ = 145732659676. Its totient is φ = 145698441120.

The previous prime is 145715550389. The next prime is 145715550401. The reversal of 145715550397 is 793055517541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40286109796 + 105429440601 = 200714^2 + 324699^2 .

It is a cyclic number.

It is not a de Polignac number, because 145715550397 - 2³ = 145715550389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145715550377) 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, 8541858 + ... + 8558899.

It is an arithmetic number, because the mean of its divisors is an integer number (36433164919).

Almost surely, 2^145715550397 is an apocalyptic number.

It is an amenable number.

145715550397 is a deficient number, since it is larger than the sum of its proper divisors (17109279).

145715550397 is an equidigital number, since it uses as much as digits as its factorization.

145715550397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17109278.

The product of its (nonzero) digits is 3307500, while the sum is 52.

The spelling of 145715550397 in words is "one hundred forty-five billion, seven hundred fifteen million, five hundred fifty thousand, three hundred ninety-seven".