85428197384 has 32 divisors (see below), whose sum is σ = 161633102400. Its totient is φ = 42327768000.

The previous prime is 85428197369. The next prime is 85428197489. The reversal of 85428197384 is 48379182458.

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, 287597 + ... + 503555.

It is an arithmetic number, because the mean of its divisors is an integer number (5051034450).

Almost surely, 2^85428197384 is an apocalyptic number.

It is an amenable number.

85428197384 is a deficient number, since it is larger than the sum of its proper divisors (76204905016).

85428197384 is a wasteful number, since it uses less digits than its factorization.

85428197384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216413 (or 216409 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 59.

The spelling of 85428197384 in words is "eighty-five billion, four hundred twenty-eight million, one hundred ninety-seven thousand, three hundred eighty-four".