699105666512 has 160 divisors (see below), whose sum is σ = 1636216775424. Its totient is φ = 285445529600.

The previous prime is 699105666499. The next prime is 699105666527. The reversal of 699105666512 is 215666501996.

It is a happy number.

699105666512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×699105666512² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31713158 + ... + 31735194.

Almost surely, 2^699105666512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699105666512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818108387712).

699105666512 is an abundant number, since it is smaller than the sum of its proper divisors (937111108912).

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

699105666512 is a wasteful number, since it uses less digits than its factorization.

699105666512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22557 (or 22551 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 699105666512 in words is "six hundred ninety-nine billion, one hundred five million, six hundred sixty-six thousand, five hundred twelve".