61000605506 has 4 divisors (see below), whose sum is σ = 91500908262. Its totient is φ = 30500302752.

The previous prime is 61000605467. The next prime is 61000605541. The reversal of 61000605506 is 60550600016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60979857481 + 20748025 = 246941^2 + 4555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15250151375 + ... + 15250151378.

Almost surely, 2^61000605506 is an apocalyptic number.

61000605506 is a deficient number, since it is larger than the sum of its proper divisors (30500302756).

61000605506 is a wasteful number, since it uses less digits than its factorization.

61000605506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30500302755.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 61000605506 in words is "sixty-one billion, six hundred five thousand, five hundred six".