618869669012 has 24 divisors (see below), whose sum is σ = 1266523976256. Its totient is φ = 259061721408.

The previous prime is 618869668951. The next prime is 618869669023. The reversal of 618869669012 is 210966968816.

It is a happy number.

It is a super-2 number, since 2×618869669012² (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, 257004473 + ... + 257006880.

It is an arithmetic number, because the mean of its divisors is an integer number (52771832344).

Almost surely, 2^618869669012 is an apocalyptic number.

It is an amenable number.

618869669012 is an abundant number, since it is smaller than the sum of its proper divisors (647654307244).

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

618869669012 is a wasteful number, since it uses less digits than its factorization.

618869669012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514011407 (or 514011405 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 62.

The spelling of 618869669012 in words is "six hundred eighteen billion, eight hundred sixty-nine million, six hundred sixty-nine thousand, twelve".