676455378563 has 16 divisors (see below), whose sum is σ = 711758427264. Its totient is φ = 642136521600.

The previous prime is 676455378551. The next prime is 676455378601. The reversal of 676455378563 is 365873554676.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 676455378563 - 2²² = 676451184259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 676455378563.

It is not an unprimeable number, because it can be changed into a prime (676455378163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62288 + ... + 1164813.

It is an arithmetic number, because the mean of its divisors is an integer number (44484901704).

Almost surely, 2^676455378563 is an apocalyptic number.

676455378563 is a deficient number, since it is larger than the sum of its proper divisors (35303048701).

676455378563 is a wasteful number, since it uses less digits than its factorization.

676455378563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227502.

The product of its digits is 381024000, while the sum is 65.

The spelling of 676455378563 in words is "six hundred seventy-six billion, four hundred fifty-five million, three hundred seventy-eight thousand, five hundred sixty-three".