15461351661 has 32 divisors (see below), whose sum is σ = 24064646400. Its totient is φ = 8826359808.

The previous prime is 15461351651. The next prime is 15461351671. The reversal of 15461351661 is 16615316451.

It is an interprime number because it is at equal distance from previous prime (15461351651) and next prime (15461351671).

It is not a de Polignac number, because 15461351661 - 2¹¹ = 15461349613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15461351611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1121965 + ... + 1135661.

It is an arithmetic number, because the mean of its divisors is an integer number (752020200).

Almost surely, 2^15461351661 is an apocalyptic number.

It is an amenable number.

15461351661 is a deficient number, since it is larger than the sum of its proper divisors (8603294739).

15461351661 is a wasteful number, since it uses less digits than its factorization.

15461351661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14818 (or 14804 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The spelling of 15461351661 in words is "fifteen billion, four hundred sixty-one million, three hundred fifty-one thousand, six hundred sixty-one".