15963948547 has 2 divisors, whose sum is σ = 15963948548. Its totient is φ = 15963948546.

The previous prime is 15963948527. The next prime is 15963948551. The reversal of 15963948547 is 74584936951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15963948547 - 2³¹ = 13816464899 is a prime.

It is a super-2 number, since 2×15963948547² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15963948527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7981974273 + 7981974274.

It is an arithmetic number, because the mean of its divisors is an integer number (7981974274).

Almost surely, 2^15963948547 is an apocalyptic number.

15963948547 is a deficient number, since it is larger than the sum of its proper divisors (1).

15963948547 is an equidigital number, since it uses as much as digits as its factorization.

15963948547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 61.

The spelling of 15963948547 in words is "fifteen billion, nine hundred sixty-three million, nine hundred forty-eight thousand, five hundred forty-seven".