361205864271397 has 4 divisors (see below), whose sum is σ = 361349143077676. Its totient is φ = 361062585465120.

The previous prime is 361205864271377. The next prime is 361205864271419. The reversal of 361205864271397 is 793172468502163.

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 15912687443041 + 345293176828356 = 3989071^2 + 18582066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361205864271397 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 (361205864271347) 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, 71639399358 + ... + 71639404399.

It is an arithmetic number, because the mean of its divisors is an integer number (90337285769419).

It is a 1-persistent number, because it is pandigital, but 2⋅361205864271397 = 722411728542794 is not.

Almost surely, 2^{361205864271397} is an apocalyptic number.

It is an amenable number.

361205864271397 is a deficient number, since it is larger than the sum of its proper divisors (143278806279).

361205864271397 is a wasteful number, since it uses less digits than its factorization.

361205864271397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143278806278.

The product of its (nonzero) digits is 91445760, while the sum is 64.

The spelling of 361205864271397 in words is "three hundred sixty-one trillion, two hundred five billion, eight hundred sixty-four million, two hundred seventy-one thousand, three hundred ninety-seven".