15430561440146 has 8 divisors (see below), whose sum is σ = 23582556163404. Its totient is φ = 7569709385680.

The previous prime is 15430561440139. The next prime is 15430561440169. The reversal of 15430561440146 is 64104416503451.

It can be written as a sum of positive squares in 2 ways, for example, as 15426520930921 + 4040509225 = 3927661^2 + 63565^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 15430561440097 and 15430561440106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72785667065 + ... + 72785667276.

Almost surely, 2^{15430561440146} is an apocalyptic number.

15430561440146 is a deficient number, since it is larger than the sum of its proper divisors (8151994723258).

15430561440146 is a wasteful number, since it uses less digits than its factorization.

15430561440146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145571334396.

The product of its (nonzero) digits is 691200, while the sum is 44.

Adding to 15430561440146 its reverse (64104416503451), we get a palindrome (79534977943597).

The spelling of 15430561440146 in words is "fifteen trillion, four hundred thirty billion, five hundred sixty-one million, four hundred forty thousand, one hundred forty-six".