1655536066651 has 4 divisors (see below), whose sum is σ = 1657037007072. Its totient is φ = 1654035126232.

The previous prime is 1655536066649. The next prime is 1655536066673. The reversal of 1655536066651 is 1566606355561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1655536066651 - 2¹ = 1655536066649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1655536066592 and 1655536066601.

It is not an unprimeable number, because it can be changed into a prime (1655536066601) by changing a digit.

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, 750468556 + ... + 750470761.

It is an arithmetic number, because the mean of its divisors is an integer number (414259251768).

Almost surely, 2^{1655536066651} is an apocalyptic number.

1655536066651 is a deficient number, since it is larger than the sum of its proper divisors (1500940421).

1655536066651 is a wasteful number, since it uses less digits than its factorization.

1655536066651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500940420.

The product of its (nonzero) digits is 14580000, while the sum is 55.

The spelling of 1655536066651 in words is "one trillion, six hundred fifty-five billion, five hundred thirty-six million, sixty-six thousand, six hundred fifty-one".