61000505061 has 8 divisors (see below), whose sum is σ = 82448171520. Its totient is φ = 40109920992.

The previous prime is 61000505047. The next prime is 61000505101. The reversal of 61000505061 is 16050500016.

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

It is not a de Polignac number, because 61000505061 - 2¹⁵ = 61000472293 is a prime.

It is a super-2 number, since 2×61000505061² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000505021) 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, 139270341 + ... + 139270778.

It is an arithmetic number, because the mean of its divisors is an integer number (10306021440).

Almost surely, 2^61000505061 is an apocalyptic number.

It is an amenable number.

61000505061 is a deficient number, since it is larger than the sum of its proper divisors (21447666459).

61000505061 is a wasteful number, since it uses less digits than its factorization.

61000505061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278541195.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 61000505061 in words is "sixty-one billion, five hundred five thousand, sixty-one".