15426561461 has 8 divisors (see below), whose sum is σ = 15456544440. Its totient is φ = 15396599232.

The previous prime is 15426561443. The next prime is 15426561499. The reversal of 15426561461 is 16416562451.

It can be written as a sum of positive squares in 4 ways, for example, as 166900561 + 15259660900 = 12919^2 + 123530^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15426561461 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 (15426761461) 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, 3124751 + ... + 3129683.

It is an arithmetic number, because the mean of its divisors is an integer number (1932068055).

Almost surely, 2^15426561461 is an apocalyptic number.

It is an amenable number.

15426561461 is a deficient number, since it is larger than the sum of its proper divisors (29982979).

15426561461 is an equidigital number, since it uses as much as digits as its factorization.

15426561461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375.

The product of its digits is 172800, while the sum is 41.

The spelling of 15426561461 in words is "fifteen billion, four hundred twenty-six million, five hundred sixty-one thousand, four hundred sixty-one".