77855385383 has 8 divisors (see below), whose sum is σ = 78665850480. Its totient is φ = 77045080320.

The previous prime is 77855385341. The next prime is 77855385463. The reversal of 77855385383 is 38358355877.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 77855385383 - 2²⁶ = 77788276519 is a prime.

It is a super-2 number, since 2×77855385383² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77855385313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108493 + ... + 1176633.

It is an arithmetic number, because the mean of its divisors is an integer number (9833231310).

Almost surely, 2^77855385383 is an apocalyptic number.

77855385383 is a deficient number, since it is larger than the sum of its proper divisors (810465097).

77855385383 is a wasteful number, since it uses less digits than its factorization.

77855385383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80017.

The product of its digits is 84672000, while the sum is 62.

The spelling of 77855385383 in words is "seventy-seven billion, eight hundred fifty-five million, three hundred eighty-five thousand, three hundred eighty-three".