77983990202122 has 16 divisors (see below), whose sum is σ = 121821785217000. Its totient is φ = 37394776135360.

The previous prime is 77983990202077. The next prime is 77983990202171. The reversal of 77983990202122 is 22120209938977.

It can be written as a sum of positive squares in 4 ways, for example, as 47221758932481 + 30762231269641 = 6871809^2 + 5546371^2 .

It is a super-3 number, since 3×77983990202122³ (a number of 43 digits) contains 333 as substring.

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, 4511909329 + ... + 4511926612.

Almost surely, 2^{77983990202122} is an apocalyptic number.

77983990202122 is a deficient number, since it is larger than the sum of its proper divisors (43837795014878).

77983990202122 is a wasteful number, since it uses less digits than its factorization.

77983990202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023836121.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 77983990202122 in words is "seventy-seven trillion, nine hundred eighty-three billion, nine hundred ninety million, two hundred two thousand, one hundred twenty-two".