61006006501 has 4 divisors (see below), whose sum is σ = 66552007104. Its totient is φ = 55460005900.

The previous prime is 61006006471. The next prime is 61006006507. The reversal of 61006006501 is 10560060016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61006006501 - 2¹³ = 61005998309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61006006507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773000285 + ... + 2773000306.

It is an arithmetic number, because the mean of its divisors is an integer number (16638001776).

Almost surely, 2^61006006501 is an apocalyptic number.

It is an amenable number.

61006006501 is a deficient number, since it is larger than the sum of its proper divisors (5546000603).

61006006501 is a wasteful number, since it uses less digits than its factorization.

61006006501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546000602.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 61006006501 its reverse (10560060016), we get a palindrome (71566066517).

The spelling of 61006006501 in words is "sixty-one billion, six million, six thousand, five hundred one".