1957879123206 has 16 divisors (see below), whose sum is σ = 4050784393200. Its totient is φ = 630122016608.

The previous prime is 1957879123183. The next prime is 1957879123271. The reversal of 1957879123206 is 6023219787591.

It is a happy number.

It is a super-2 number, since 2×1957879123206² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1957879123206.

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, 5626089261 + ... + 5626089608.

It is an arithmetic number, because the mean of its divisors is an integer number (253174024575).

Almost surely, 2^{1957879123206} is an apocalyptic number.

1957879123206 is an abundant number, since it is smaller than the sum of its proper divisors (2092905269994).

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

1957879123206 is a wasteful number, since it uses less digits than its factorization.

1957879123206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11252178903.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 1957879123206 in words is "one trillion, nine hundred fifty-seven billion, eight hundred seventy-nine million, one hundred twenty-three thousand, two hundred six".