61226902889 has 2 divisors, whose sum is σ = 61226902890. Its totient is φ = 61226902888.

The previous prime is 61226902837. The next prime is 61226902897. The reversal of 61226902889 is 98820962216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61173612889 + 53290000 = 247333^2 + 7300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61226902889 is a prime.

It is a super-3 number, since 3×61226902889³ (a number of 33 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 61226902889.

It is not a weakly prime, because it can be changed into another prime (61226902829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30613451444 + 30613451445.

It is an arithmetic number, because the mean of its divisors is an integer number (30613451445).

Almost surely, 2^61226902889 is an apocalyptic number.

It is an amenable number.

61226902889 is a deficient number, since it is larger than the sum of its proper divisors (1).

61226902889 is an equidigital number, since it uses as much as digits as its factorization.

61226902889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 61226902889 in words is "sixty-one billion, two hundred twenty-six million, nine hundred two thousand, eight hundred eighty-nine".