354634153661 has 4 divisors (see below), whose sum is σ = 354655861500. Its totient is φ = 354612445824.

The previous prime is 354634153637. The next prime is 354634153703. The reversal of 354634153661 is 166351436453.

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: 166351436453 = 37 ⋅4495984769.

It can be written as a sum of positive squares in 2 ways, for example, as 19878180100 + 334755973561 = 140990^2 + 578581^2 .

It is a cyclic number.

It is not a de Polignac number, because 354634153661 - 2¹⁰ = 354634152637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354634153261) 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, 10829396 + ... + 10862093.

It is an arithmetic number, because the mean of its divisors is an integer number (88663965375).

Almost surely, 2^354634153661 is an apocalyptic number.

It is an amenable number.

354634153661 is a deficient number, since it is larger than the sum of its proper divisors (21707839).

354634153661 is a wasteful number, since it uses less digits than its factorization.

354634153661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707838.

The product of its digits is 2332800, while the sum is 47.

The spelling of 354634153661 in words is "three hundred fifty-four billion, six hundred thirty-four million, one hundred fifty-three thousand, six hundred sixty-one".