354245723261 has 4 divisors (see below), whose sum is σ = 355296897852. Its totient is φ = 353194548672.

The previous prime is 354245723203. The next prime is 354245723323. The reversal of 354245723261 is 162327542453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162327542453 = 47 ⋅3453777499.

It can be written as a sum of positive squares in 2 ways, for example, as 127842002500 + 226403720761 = 357550^2 + 475819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354245723261 is a prime.

It is a super-3 number, since 3×354245723261³ (a number of 36 digits) contains 333 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 (354245723561) 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, 525586790 + ... + 525587463.

It is an arithmetic number, because the mean of its divisors is an integer number (88824224463).

Almost surely, 2^354245723261 is an apocalyptic number.

It is an amenable number.

354245723261 is a deficient number, since it is larger than the sum of its proper divisors (1051174591).

354245723261 is a wasteful number, since it uses less digits than its factorization.

354245723261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051174590.

The product of its digits is 1209600, while the sum is 44.

The spelling of 354245723261 in words is "three hundred fifty-four billion, two hundred forty-five million, seven hundred twenty-three thousand, two hundred sixty-one".