15409100842397 has 8 divisors (see below), whose sum is σ = 15568982742840. Its totient is φ = 15249631541760.

The previous prime is 15409100842381. The next prime is 15409100842403. The reversal of 15409100842397 is 79324800190451.

It can be written as a sum of positive squares in 4 ways, for example, as 4586540507641 + 10822560334756 = 2141621^2 + 3289766^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15409100842397 - 2⁴ = 15409100842381 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 (15409100841397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103074872 + ... + 103224257.

It is an arithmetic number, because the mean of its divisors is an integer number (1946122842855).

Almost surely, 2^{15409100842397} is an apocalyptic number.

It is an amenable number.

15409100842397 is a deficient number, since it is larger than the sum of its proper divisors (159881900443).

15409100842397 is a wasteful number, since it uses less digits than its factorization.

15409100842397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206299903.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 15409100842397 in words is "fifteen trillion, four hundred nine billion, one hundred million, eight hundred forty-two thousand, three hundred ninety-seven".