1121777456 has 20 divisors (see below), whose sum is σ = 2180870832. Its totient is φ = 558972096.

The previous prime is 1121777441. The next prime is 1121777471. The reversal of 1121777456 is 6547771211.

It is an interprime number because it is at equal distance from previous prime (1121777441) and next prime (1121777471).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114956 + ... + 124331.

Almost surely, 2^1121777456 is an apocalyptic number.

1121777456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1121777456 is a deficient number, since it is larger than the sum of its proper divisors (1059093376).

1121777456 is a wasteful number, since it uses less digits than its factorization.

1121777456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239588 (or 239582 counting only the distinct ones).

The product of its digits is 82320, while the sum is 41.

The square root of 1121777456 is about 33492.9463618834. The cubic root of 1121777456 is about 1039.0479008276.

The spelling of 1121777456 in words is "one billion, one hundred twenty-one million, seven hundred seventy-seven thousand, four hundred fifty-six".