61632861766 has 32 divisors (see below), whose sum is σ = 110669442048. Its totient is φ = 25169543520.

The previous prime is 61632861739. The next prime is 61632861767. The reversal of 61632861766 is 66716823616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61632861767) 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 15 ways as a sum of consecutive naturals, for example, 279205 + ... + 448576.

It is an arithmetic number, because the mean of its divisors is an integer number (3458420064).

Almost surely, 2^61632861766 is an apocalyptic number.

61632861766 is a deficient number, since it is larger than the sum of its proper divisors (49036580282).

61632861766 is a wasteful number, since it uses less digits than its factorization.

61632861766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728076.

The product of its digits is 2612736, while the sum is 52.

The spelling of 61632861766 in words is "sixty-one billion, six hundred thirty-two million, eight hundred sixty-one thousand, seven hundred sixty-six".