61105550556131 has 8 divisors (see below), whose sum is σ = 61597420346400. Its totient is φ = 60614980291008.

The previous prime is 61105550556121. The next prime is 61105550556163. The reversal of 61105550556131 is 13165505550116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61105550556131 - 2³⁰ = 61104476814307 is a prime.

It is a super-2 number, since 2×61105550556131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61105550556121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324786866 + ... + 324974951.

It is an arithmetic number, because the mean of its divisors is an integer number (7699677543300).

Almost surely, 2^{61105550556131} is an apocalyptic number.

61105550556131 is a deficient number, since it is larger than the sum of its proper divisors (491869790269).

61105550556131 is a wasteful number, since it uses less digits than its factorization.

61105550556131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649762573.

The product of its (nonzero) digits is 337500, while the sum is 44.

The spelling of 61105550556131 in words is "sixty-one trillion, one hundred five billion, five hundred fifty million, five hundred fifty-six thousand, one hundred thirty-one".