61042228829 has 2 divisors, whose sum is σ = 61042228830. Its totient is φ = 61042228828.

The previous prime is 61042228757. The next prime is 61042228837. The reversal of 61042228829 is 92882224016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60960597604 + 81631225 = 246902^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 61042228829 - 2²⁰ = 61041180253 is a prime.

It is a super-2 number, since 2×61042228829² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61042228829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61042228859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30521114414 + 30521114415.

It is an arithmetic number, because the mean of its divisors is an integer number (30521114415).

Almost surely, 2^61042228829 is an apocalyptic number.

It is an amenable number.

61042228829 is a deficient number, since it is larger than the sum of its proper divisors (1).

61042228829 is an equidigital number, since it uses as much as digits as its factorization.

61042228829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 61042228829 in words is "sixty-one billion, forty-two million, two hundred twenty-eight thousand, eight hundred twenty-nine".