1228355353687 has 64 divisors (see below), whose sum is σ = 1620360576000. Its totient is φ = 902125486080.

The previous prime is 1228355353679. The next prime is 1228355353711. The reversal of 1228355353687 is 7863535538221.

It is not a de Polignac number, because 1228355353687 - 2³ = 1228355353679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228355363687) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 264216939 + ... + 264221587.

It is an arithmetic number, because the mean of its divisors is an integer number (25318134000).

Almost surely, 2^{1228355353687} is an apocalyptic number.

1228355353687 is a deficient number, since it is larger than the sum of its proper divisors (392005222313).

1228355353687 is a wasteful number, since it uses less digits than its factorization.

1228355353687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5576.

The product of its digits is 36288000, while the sum is 58.

The spelling of 1228355353687 in words is "one trillion, two hundred twenty-eight billion, three hundred fifty-five million, three hundred fifty-three thousand, six hundred eighty-seven".