15580552997 has 2 divisors, whose sum is σ = 15580552998. Its totient is φ = 15580552996.

The previous prime is 15580552993. The next prime is 15580553003. The reversal of 15580552997 is 79925508551.

15580552997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7956818401 + 7623734596 = 89201^2 + 87314^2 .

It is a cyclic number.

It is not a de Polignac number, because 15580552997 - 2² = 15580552993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15580552993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7790276498 + 7790276499.

It is an arithmetic number, because the mean of its divisors is an integer number (7790276499).

Almost surely, 2^15580552997 is an apocalyptic number.

It is an amenable number.

15580552997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15580552997 is an equidigital number, since it uses as much as digits as its factorization.

15580552997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670000, while the sum is 56.

It can be divided in two parts, 155805 and 52997, that added together give a palindrome (208802).

The spelling of 15580552997 in words is "fifteen billion, five hundred eighty million, five hundred fifty-two thousand, nine hundred ninety-seven".