85421007734 has 32 divisors (see below), whose sum is σ = 134335687680. Its totient is φ = 40660314112.

The previous prime is 85421007677. The next prime is 85421007761. The reversal of 85421007734 is 43770012458.

It is a junction number, because it is equal to n+sod(n) for n = 85421007691 and 85421007700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19137587 + ... + 19142049.

It is an arithmetic number, because the mean of its divisors is an integer number (4197990240).

Almost surely, 2^85421007734 is an apocalyptic number.

85421007734 is a deficient number, since it is larger than the sum of its proper divisors (48914679946).

85421007734 is a wasteful number, since it uses less digits than its factorization.

85421007734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 85421007734 in words is "eighty-five billion, four hundred twenty-one million, seven thousand, seven hundred thirty-four".