685517033742 has 16 divisors (see below), whose sum is σ = 1375878714240. Its totient is φ = 227698236792.

The previous prime is 685517033737. The next prime is 685517033797. The reversal of 685517033742 is 247330715586.

It is a congruent number.

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, 201858442 + ... + 201861837.

It is an arithmetic number, because the mean of its divisors is an integer number (85992419640).

Almost surely, 2^685517033742 is an apocalyptic number.

685517033742 is an abundant number, since it is smaller than the sum of its proper divisors (690361680498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685517033742 is a wasteful number, since it uses less digits than its factorization.

685517033742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403720567.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 685517033742 in words is "six hundred eighty-five billion, five hundred seventeen million, thirty-three thousand, seven hundred forty-two".