61632278687 has 32 divisors (see below), whose sum is σ = 72472458240. Its totient is φ = 51325712640.

The previous prime is 61632278683. The next prime is 61632278689. The reversal of 61632278687 is 78687223616.

It is a cyclic number.

It is not a de Polignac number, because 61632278687 - 2² = 61632278683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61632278683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12481283 + ... + 12486219.

It is an arithmetic number, because the mean of its divisors is an integer number (2264764320).

Almost surely, 2^61632278687 is an apocalyptic number.

61632278687 is a deficient number, since it is larger than the sum of its proper divisors (10840179553).

61632278687 is a wasteful number, since it uses less digits than its factorization.

61632278687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5351.

The product of its digits is 8128512, while the sum is 56.

The spelling of 61632278687 in words is "sixty-one billion, six hundred thirty-two million, two hundred seventy-eight thousand, six hundred eighty-seven".