77111091834 has 16 divisors (see below), whose sum is σ = 176253924288. Its totient is φ = 22031740512.

The previous prime is 77111091803. The next prime is 77111091851. The reversal of 77111091834 is 43819011177.

It is a super-2 number, since 2×77111091834² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1835978377 = 77111091834 / (7 + 7 + 1 + 1 + 1 + 0 + 9 + 1 + 8 + 3 + 4).

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, 917989147 + ... + 917989230.

It is an arithmetic number, because the mean of its divisors is an integer number (11015870268).

Almost surely, 2^77111091834 is an apocalyptic number.

77111091834 is an abundant number, since it is smaller than the sum of its proper divisors (99142832454).

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

77111091834 is a wasteful number, since it uses less digits than its factorization.

77111091834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835978389.

The product of its (nonzero) digits is 42336, while the sum is 42.

The spelling of 77111091834 in words is "seventy-seven billion, one hundred eleven million, ninety-one thousand, eight hundred thirty-four".