116777778 has 16 divisors (see below), whose sum is σ = 251521536. Its totient is φ = 35931600.

The previous prime is 116777737. The next prime is 116777783. The reversal of 116777778 is 877777611.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 116777778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748498 + ... + 748653.

It is an arithmetic number, because the mean of its divisors is an integer number (15720096).

Almost surely, 2^116777778 is an apocalyptic number.

116777778 is an abundant number, since it is smaller than the sum of its proper divisors (134743758).

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

116777778 is a wasteful number, since it uses less digits than its factorization.

116777778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497169.

The product of its digits is 806736, while the sum is 51.

The square root of 116777778 is about 10806.3767285802. The cubic root of 116777778 is about 488.7874754484.

The spelling of 116777778 in words is "one hundred sixteen million, seven hundred seventy-seven thousand, seven hundred seventy-eight".