85981783964 has 12 divisors (see below), whose sum is σ = 152280991464. Its totient is φ = 42472929264.

The previous prime is 85981783957. The next prime is 85981783981. The reversal of 85981783964 is 46938718958.

It is a happy number.

It is a super-3 number, since 3×85981783964³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85981783894 and 85981783903.

It is a congruent number.

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, 129490307 + ... + 129490970.

It is an arithmetic number, because the mean of its divisors is an integer number (12690082622).

Almost surely, 2^85981783964 is an apocalyptic number.

It is an amenable number.

85981783964 is a deficient number, since it is larger than the sum of its proper divisors (66299207500).

85981783964 is a wasteful number, since it uses less digits than its factorization.

85981783964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258981364 (or 258981362 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 68.

The spelling of 85981783964 in words is "eighty-five billion, nine hundred eighty-one million, seven hundred eighty-three thousand, nine hundred sixty-four".