1268445477658 has 16 divisors (see below), whose sum is σ = 1904114628000. Its totient is φ = 633740727312.

The previous prime is 1268445477617. The next prime is 1268445477683. The reversal of 1268445477658 is 8567745448621.

It is a junction number, because it is equal to n+sod(n) for n = 1268445477593 and 1268445477602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23402353 + ... + 23456491.

It is an arithmetic number, because the mean of its divisors is an integer number (119007164250).

Almost surely, 2^{1268445477658} is an apocalyptic number.

1268445477658 is a deficient number, since it is larger than the sum of its proper divisors (635669150342).

1268445477658 is a wasteful number, since it uses less digits than its factorization.

1268445477658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62829.

The product of its digits is 361267200, while the sum is 67.

The spelling of 1268445477658 in words is "one trillion, two hundred sixty-eight billion, four hundred forty-five million, four hundred seventy-seven thousand, six hundred fifty-eight".