1187111670456 has 64 divisors (see below), whose sum is σ = 2978164000800. Its totient is φ = 394320109568.

The previous prime is 1187111670439. The next prime is 1187111670461. The reversal of 1187111670456 is 6540761117811.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23475856 + ... + 23526368.

Almost surely, 2^{1187111670456} is an apocalyptic number.

It is an amenable number.

1187111670456 is an abundant number, since it is smaller than the sum of its proper divisors (1791052330344).

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

1187111670456 is a wasteful number, since it uses less digits than its factorization.

1187111670456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53928 (or 53924 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 48.

The spelling of 1187111670456 in words is "one trillion, one hundred eighty-seven billion, one hundred eleven million, six hundred seventy thousand, four hundred fifty-six".