15557627045 has 4 divisors (see below), whose sum is σ = 18669152460. Its totient is φ = 12446101632.

The previous prime is 15557627023. The next prime is 15557627053. The reversal of 15557627045 is 54072675551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9330207649 + 6227419396 = 96593^2 + 78914^2 .

It is a cyclic number.

It is not a de Polignac number, because 15557627045 - 2¹⁴ = 15557610661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1555762700 + ... + 1555762709.

It is an arithmetic number, because the mean of its divisors is an integer number (4667288115).

Almost surely, 2^15557627045 is an apocalyptic number.

It is an amenable number.

15557627045 is a deficient number, since it is larger than the sum of its proper divisors (3111525415).

15557627045 is an equidigital number, since it uses as much as digits as its factorization.

15557627045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3111525414.

The product of its (nonzero) digits is 1470000, while the sum is 47.

The spelling of 15557627045 in words is "fifteen billion, five hundred fifty-seven million, six hundred twenty-seven thousand, forty-five".