83777077738 has 8 divisors (see below), whose sum is σ = 126303513732. Its totient is φ = 41675906496.

The previous prime is 83777077733. The next prime is 83777077753.

It is a happy number.

83777077738 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 64634418289 + 19142659449 = 254233^2 + 138357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 83777077738.

It is not an unprimeable number, because it can be changed into a prime (83777077733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106315695 + ... + 106316482.

Almost surely, 2^83777077738 is an apocalyptic number.

83777077738 is a deficient number, since it is larger than the sum of its proper divisors (42526435994).

83777077738 is a wasteful number, since it uses less digits than its factorization.

83777077738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212632376.

The product of its (nonzero) digits is 67765824, while the sum is 64.

The spelling of 83777077738 in words is "eighty-three billion, seven hundred seventy-seven million, seventy-seven thousand, seven hundred thirty-eight".