54699966621149 has 2 divisors, whose sum is σ = 54699966621150. Its totient is φ = 54699966621148.

The previous prime is 54699966621143. The next prime is 54699966621173. The reversal of 54699966621149 is 94112666999645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53820343975225 + 879622645924 = 7336235^2 + 937882^2 .

It is a cyclic number.

It is not a de Polignac number, because 54699966621149 - 2²⁰ = 54699965572573 is a prime.

It is a super-3 number, since 3×54699966621149³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54699966621149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54699966621143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27349983310574 + 27349983310575.

It is an arithmetic number, because the mean of its divisors is an integer number (27349983310575).

Almost surely, 2^{54699966621149} is an apocalyptic number.

It is an amenable number.

54699966621149 is a deficient number, since it is larger than the sum of its proper divisors (1).

54699966621149 is an equidigital number, since it uses as much as digits as its factorization.

54699966621149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360488960, while the sum is 77.

The spelling of 54699966621149 in words is "fifty-four trillion, six hundred ninety-nine billion, nine hundred sixty-six million, six hundred twenty-one thousand, one hundred forty-nine".