669779737016 has 32 divisors (see below), whose sum is σ = 1359911935200. Its totient is φ = 307421205120.

The previous prime is 669779736991. The next prime is 669779737049. The reversal of 669779737016 is 610737977966.

It is a super-2 number, since 2×669779737016² (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 7 ways as a sum of consecutive naturals, for example, 17771756 + ... + 17809403.

It is an arithmetic number, because the mean of its divisors is an integer number (42497247975).

Almost surely, 2^669779737016 is an apocalyptic number.

It is an amenable number.

669779737016 is an abundant number, since it is smaller than the sum of its proper divisors (690132198184).

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

669779737016 is a wasteful number, since it uses less digits than its factorization.

669779737016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35581359 (or 35581355 counting only the distinct ones).

The product of its (nonzero) digits is 126023688, while the sum is 68.

The spelling of 669779737016 in words is "six hundred sixty-nine billion, seven hundred seventy-nine million, seven hundred thirty-seven thousand, sixteen".