1267783116078 has 32 divisors (see below), whose sum is σ = 2669068909440. Its totient is φ = 400344789600.

The previous prime is 1267783116077. The next prime is 1267783116101. The reversal of 1267783116078 is 8706113877621.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267783116077) 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, 9604728 + ... + 9735828.

It is an arithmetic number, because the mean of its divisors is an integer number (83408403420).

Almost surely, 2^{1267783116078} is an apocalyptic number.

1267783116078 is an abundant number, since it is smaller than the sum of its proper divisors (1401285793362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1267783116078 is a wasteful number, since it uses less digits than its factorization.

1267783116078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215952.

The product of its (nonzero) digits is 4741632, while the sum is 57.

The spelling of 1267783116078 in words is "one trillion, two hundred sixty-seven billion, seven hundred eighty-three million, one hundred sixteen thousand, seventy-eight".