15040470691 has 2 divisors, whose sum is σ = 15040470692. Its totient is φ = 15040470690.

The previous prime is 15040470689. The next prime is 15040470779. The reversal of 15040470691 is 19607404051.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15040470691 - 2¹ = 15040470689 is a prime.

Together with 15040470689, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15040470691.

It is not a weakly prime, because it can be changed into another prime (15040440691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7520235345 + 7520235346.

It is an arithmetic number, because the mean of its divisors is an integer number (7520235346).

Almost surely, 2^15040470691 is an apocalyptic number.

15040470691 is a deficient number, since it is larger than the sum of its proper divisors (1).

15040470691 is an equidigital number, since it uses as much as digits as its factorization.

15040470691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 15040470691 in words is "fifteen billion, forty million, four hundred seventy thousand, six hundred ninety-one".