15948275261 has 4 divisors (see below), whose sum is σ = 15967941024. Its totient is φ = 15928609500.

The previous prime is 15948275257. The next prime is 15948275303. The reversal of 15948275261 is 16257284951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16257284951 = 1063 ⋅15293777.

It is a cyclic number.

It is not a de Polignac number, because 15948275261 - 2² = 15948275257 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 (15948278261) 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, 9831665 + ... + 9833286.

It is an arithmetic number, because the mean of its divisors is an integer number (3991985256).

Almost surely, 2^15948275261 is an apocalyptic number.

It is an amenable number.

15948275261 is a deficient number, since it is larger than the sum of its proper divisors (19665763).

15948275261 is an equidigital number, since it uses as much as digits as its factorization.

15948275261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19665762.

The product of its digits is 1209600, while the sum is 50.

The spelling of 15948275261 in words is "fifteen billion, nine hundred forty-eight million, two hundred seventy-five thousand, two hundred sixty-one".