61011155005 has 8 divisors (see below), whose sum is σ = 73218447072. Its totient is φ = 48805549968.

The previous prime is 61011154993. The next prime is 61011155027. The reversal of 61011155005 is 50055111016.

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 61011155005 - 2¹¹ = 61011152957 is a prime.

It is a super-2 number, since 2×61011155005² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 340779 + ... + 488008.

It is an arithmetic number, because the mean of its divisors is an integer number (9152305884).

Almost surely, 2^61011155005 is an apocalyptic number.

It is an amenable number.

61011155005 is a deficient number, since it is larger than the sum of its proper divisors (12207292067).

61011155005 is a wasteful number, since it uses less digits than its factorization.

61011155005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843515.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 61011155005 in words is "sixty-one billion, eleven million, one hundred fifty-five thousand, five".