1267399148156 has 24 divisors (see below), whose sum is σ = 2472016916880. Its totient is φ = 565032436992.

The previous prime is 1267399148153. The next prime is 1267399148161. The reversal of 1267399148156 is 6518419937621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267399148153) 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, 490478255 + ... + 490480838.

It is an arithmetic number, because the mean of its divisors is an integer number (103000704870).

Almost surely, 2^{1267399148156} is an apocalyptic number.

It is an amenable number.

1267399148156 is a deficient number, since it is larger than the sum of its proper divisors (1204617768724).

1267399148156 is a wasteful number, since it uses less digits than its factorization.

1267399148156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980959133 (or 980959131 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 62.

The spelling of 1267399148156 in words is "one trillion, two hundred sixty-seven billion, three hundred ninety-nine million, one hundred forty-eight thousand, one hundred fifty-six".