1187054448778 has 32 divisors (see below), whose sum is σ = 1954615836672. Its totient is φ = 536197335600.

The previous prime is 1187054448763. The next prime is 1187054448787. The reversal of 1187054448778 is 8778444507811.

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, 3986875 + ... + 4274257.

It is an arithmetic number, because the mean of its divisors is an integer number (61081744896).

Almost surely, 2^{1187054448778} is an apocalyptic number.

1187054448778 is a deficient number, since it is larger than the sum of its proper divisors (767561387894).

1187054448778 is a wasteful number, since it uses less digits than its factorization.

1187054448778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288570.

The product of its (nonzero) digits is 56197120, while the sum is 64.

The spelling of 1187054448778 in words is "one trillion, one hundred eighty-seven billion, fifty-four million, four hundred forty-eight thousand, seven hundred seventy-eight".