11958620678929 has 2 divisors, whose sum is σ = 11958620678930. Its totient is φ = 11958620678928.

The previous prime is 11958620678911. The next prime is 11958620678951. The reversal of 11958620678929 is 92987602685911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9586949838400 + 2371670840529 = 3096280^2 + 1540023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11958620678929 is a prime.

It is a super-3 number, since 3×11958620678929³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11958620678029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5979310339464 + 5979310339465.

It is an arithmetic number, because the mean of its divisors is an integer number (5979310339465).

Almost surely, 2^{11958620678929} is an apocalyptic number.

It is an amenable number.

11958620678929 is a deficient number, since it is larger than the sum of its proper divisors (1).

11958620678929 is an equidigital number, since it uses as much as digits as its factorization.

11958620678929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235146240, while the sum is 73.

The spelling of 11958620678929 in words is "eleven trillion, nine hundred fifty-eight billion, six hundred twenty million, six hundred seventy-eight thousand, nine hundred twenty-nine".