61968322153 has 16 divisors (see below), whose sum is σ = 64762568640. Its totient is φ = 59248977984.

The previous prime is 61968322111. The next prime is 61968322261. The reversal of 61968322153 is 35122386916.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61968322153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61968322553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309375 + ... + 468667.

It is an arithmetic number, because the mean of its divisors is an integer number (4047660540).

Almost surely, 2^61968322153 is an apocalyptic number.

It is an amenable number.

61968322153 is a deficient number, since it is larger than the sum of its proper divisors (2794246487).

61968322153 is a wasteful number, since it uses less digits than its factorization.

61968322153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159528.

The product of its digits is 466560, while the sum is 46.

The spelling of 61968322153 in words is "sixty-one billion, nine hundred sixty-eight million, three hundred twenty-two thousand, one hundred fifty-three".