89377777778 has 8 divisors (see below), whose sum is σ = 134067977820. Its totient is φ = 44688451840.

The previous prime is 89377777679. The next prime is 89377777781. The reversal of 89377777778 is 87777777398.

It can be written as a sum of positive squares in 2 ways, for example, as 80189213329 + 9188564449 = 283177^2 + 95857^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 89377777699 and 89377777708.

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, 189398 + ... + 463278.

Almost surely, 2^89377777778 is an apocalyptic number.

89377777778 is a deficient number, since it is larger than the sum of its proper divisors (44690200042).

89377777778 is a wasteful number, since it uses less digits than its factorization.

89377777778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437052.

The product of its digits is 1423082304, while the sum is 77.

The spelling of 89377777778 in words is "eighty-nine billion, three hundred seventy-seven million, seven hundred seventy-seven thousand, seven hundred seventy-eight".