84778762970 has 16 divisors (see below), whose sum is σ = 166474662048. Its totient is φ = 30828641040.

The previous prime is 84778762967. The next prime is 84778763011. The reversal of 84778762970 is 7926787748.

It is a junction number, because it is equal to n+sod(n) for n = 84778762897 and 84778762906.

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, 385357904 + ... + 385358123.

It is an arithmetic number, because the mean of its divisors is an integer number (10404666378).

Almost surely, 2^84778762970 is an apocalyptic number.

84778762970 is a deficient number, since it is larger than the sum of its proper divisors (81695899078).

84778762970 is a wasteful number, since it uses less digits than its factorization.

84778762970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770716045.

The product of its (nonzero) digits is 66382848, while the sum is 65.

It can be divided in two parts, 84778 and 762970, that added together give a palindrome (847748).

The spelling of 84778762970 in words is "eighty-four billion, seven hundred seventy-eight million, seven hundred sixty-two thousand, nine hundred seventy".