61968406951 has 32 divisors (see below), whose sum is σ = 71364510720. Its totient is φ = 53288928000.

The previous prime is 61968406943. The next prime is 61968406967. The reversal of 61968406951 is 15960486916.

It is not a de Polignac number, because 61968406951 - 2³ = 61968406943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61968406892 and 61968406901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61968406901) 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, 3507526 + ... + 3525148.

It is an arithmetic number, because the mean of its divisors is an integer number (2230140960).

Almost surely, 2^61968406951 is an apocalyptic number.

61968406951 is a deficient number, since it is larger than the sum of its proper divisors (9396103769).

61968406951 is a wasteful number, since it uses less digits than its factorization.

61968406951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17887.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 61968406951 in words is "sixty-one billion, nine hundred sixty-eight million, four hundred six thousand, nine hundred fifty-one".