140808478868 has 36 divisors (see below), whose sum is σ = 267095558772. Its totient is φ = 64896059520.

The previous prime is 140808478819. The next prime is 140808478873. The reversal of 140808478868 is 868874808041.

It can be written as a sum of positive squares in 2 ways, for example, as 131448303364 + 9360175504 = 362558^2 + 96748^2 .

It is a super-2 number, since 2×140808478868² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140808478868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264313 + ... + 1371168.

It is an arithmetic number, because the mean of its divisors is an integer number (7419321077).

Almost surely, 2^140808478868 is an apocalyptic number.

It is an amenable number.

140808478868 is a deficient number, since it is larger than the sum of its proper divisors (126287079904).

140808478868 is a wasteful number, since it uses less digits than its factorization.

140808478868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635560 (or 2635539 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 62.

It can be divided in two parts, 14080 and 8478868, that added together give a palindrome (8492948).

The spelling of 140808478868 in words is "one hundred forty billion, eight hundred eight million, four hundred seventy-eight thousand, eight hundred sixty-eight".