19090868626477 has 2 divisors, whose sum is σ = 19090868626478. Its totient is φ = 19090868626476.

The previous prime is 19090868626439. The next prime is 19090868626493. The reversal of 19090868626477 is 77462686809091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18857358360036 + 233510266441 = 4342506^2 + 483229^2 .

It is a cyclic number.

It is not a de Polignac number, because 19090868626477 - 2²⁷ = 19090734408749 is a prime.

It is a super-2 number, since 2×19090868626477² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19090868626177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9545434313238 + 9545434313239.

It is an arithmetic number, because the mean of its divisors is an integer number (9545434313239).

Almost surely, 2^{19090868626477} is an apocalyptic number.

It is an amenable number.

19090868626477 is a deficient number, since it is larger than the sum of its proper divisors (1).

19090868626477 is an equidigital number, since it uses as much as digits as its factorization.

19090868626477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 438939648, while the sum is 73.

The spelling of 19090868626477 in words is "nineteen trillion, ninety billion, eight hundred sixty-eight million, six hundred twenty-six thousand, four hundred seventy-seven".