1566660051 has 48 divisors (see below), whose sum is σ = 2555504640. Its totient is φ = 916272000.

The previous prime is 1566660023. The next prime is 1566660097. The reversal of 1566660051 is 1500666651.

It is not a de Polignac number, because 1566660051 - 2¹⁰ = 1566659027 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1566659988 and 1566660015.

It is not an unprimeable number, because it can be changed into a prime (1566660001) 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 in 47 ways as a sum of consecutive naturals, for example, 1936135 + ... + 1936943.

It is an arithmetic number, because the mean of its divisors is an integer number (53239680).

Almost surely, 2^1566660051 is an apocalyptic number.

1566660051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1566660051 is a deficient number, since it is larger than the sum of its proper divisors (988844589).

1566660051 is a wasteful number, since it uses less digits than its factorization.

1566660051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1566660051 is about 39581.0567190923. The cubic root of 1566660051 is about 1161.4261222725.

It can be divided in two parts, 15666600 and 51, that added together give a palindrome (15666651).

The spelling of 1566660051 in words is "one billion, five hundred sixty-six million, six hundred sixty thousand, fifty-one".