259977763478 has 16 divisors (see below), whose sum is σ = 392712000000. Its totient is φ = 129076382952.

The previous prime is 259977763471. The next prime is 259977763531. The reversal of 259977763478 is 874367779952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259977763471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455918 + ... + 853121.

It is an arithmetic number, because the mean of its divisors is an integer number (24544500000).

Almost surely, 2^259977763478 is an apocalyptic number.

259977763478 is a deficient number, since it is larger than the sum of its proper divisors (132734236522).

259977763478 is a wasteful number, since it uses less digits than its factorization.

259977763478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309739.

The product of its digits is 1120210560, while the sum is 74.

The spelling of 259977763478 in words is "two hundred fifty-nine billion, nine hundred seventy-seven million, seven hundred sixty-three thousand, four hundred seventy-eight".