61220755126 has 32 divisors (see below), whose sum is σ = 98283414528. Its totient is φ = 28533299520.

The previous prime is 61220755091. The next prime is 61220755151. The reversal of 61220755126 is 62155702216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442981 + ... + 564511.

It is an arithmetic number, because the mean of its divisors is an integer number (3071356704).

Almost surely, 2^61220755126 is an apocalyptic number.

61220755126 is a deficient number, since it is larger than the sum of its proper divisors (37062659402).

61220755126 is a wasteful number, since it uses less digits than its factorization.

61220755126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121836.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 61220755126 in words is "sixty-one billion, two hundred twenty million, seven hundred fifty-five thousand, one hundred twenty-six".