61000551005 has 8 divisors (see below), whose sum is σ = 73848455352. Its totient is φ = 48368578048.

The previous prime is 61000550981. The next prime is 61000551011. The reversal of 61000551005 is 50015500016.

It can be written as a sum of positive squares in 4 ways, for example, as 1719014521 + 59281536484 = 41461^2 + 243478^2 .

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 61000551005 - 2³⁰ = 59926809181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53982224 + ... + 53983353.

It is an arithmetic number, because the mean of its divisors is an integer number (9231056919).

Almost surely, 2^61000551005 is an apocalyptic number.

It is an amenable number.

61000551005 is a deficient number, since it is larger than the sum of its proper divisors (12847904347).

61000551005 is a wasteful number, since it uses less digits than its factorization.

61000551005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107965695.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 61000551005 in words is "sixty-one billion, five hundred fifty-one thousand, five".