11778274415 has 16 divisors (see below), whose sum is σ = 14251723200. Its totient is φ = 9344401920.

The previous prime is 11778274379. The next prime is 11778274423. The reversal of 11778274415 is 51447287711.

It is not a de Polignac number, because 11778274415 - 2⁸ = 11778274159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11778274415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287111 + ... + 325559.

It is an arithmetic number, because the mean of its divisors is an integer number (890732700).

Almost surely, 2^11778274415 is an apocalyptic number.

11778274415 is a deficient number, since it is larger than the sum of its proper divisors (2473448785).

11778274415 is a wasteful number, since it uses less digits than its factorization.

11778274415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38962.

The product of its digits is 439040, while the sum is 47.

The spelling of 11778274415 in words is "eleven billion, seven hundred seventy-eight million, two hundred seventy-four thousand, four hundred fifteen".