61255442770 has 32 divisors (see below), whose sum is σ = 111752949168. Its totient is φ = 24171982848.

The previous prime is 61255442761. The next prime is 61255442779. The reversal of 61255442770 is 7724455216.

It is an interprime number because it is at equal distance from previous prime (61255442761) and next prime (61255442779).

It can be written as a sum of positive squares in 8 ways, for example, as 54125449 + 61201317321 = 7357^2 + 247389^2 .

It is a super-3 number, since 3×61255442770³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61255442779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202732 + ... + 404488.

Almost surely, 2^61255442770 is an apocalyptic number.

61255442770 is a deficient number, since it is larger than the sum of its proper divisors (50497506398).

61255442770 is a wasteful number, since it uses less digits than its factorization.

61255442770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202174.

The product of its (nonzero) digits is 470400, while the sum is 43.

Adding to 61255442770 its reverse (7724455216), we get a palindrome (68979897986).

The spelling of 61255442770 in words is "sixty-one billion, two hundred fifty-five million, four hundred forty-two thousand, seven hundred seventy".