61995619357 has 16 divisors (see below), whose sum is σ = 74124513792. Its totient is φ = 50739972480.

The previous prime is 61995619321. The next prime is 61995619373. The reversal of 61995619357 is 75391659916.

It is a cyclic number.

It is not a de Polignac number, because 61995619357 - 2⁷ = 61995619229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61995619295 and 61995619304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61995613357) 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, 2284518 + ... + 2311495.

It is an arithmetic number, because the mean of its divisors is an integer number (4632782112).

Almost surely, 2^61995619357 is an apocalyptic number.

It is an amenable number.

61995619357 is a deficient number, since it is larger than the sum of its proper divisors (12128894435).

61995619357 is a wasteful number, since it uses less digits than its factorization.

61995619357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596108.

The product of its digits is 13778100, while the sum is 61.

The spelling of 61995619357 in words is "sixty-one billion, nine hundred ninety-five million, six hundred nineteen thousand, three hundred fifty-seven".