51961803482193 has 16 divisors (see below), whose sum is σ = 78018895552512. Its totient is φ = 30476131074000.

The previous prime is 51961803482153. The next prime is 51961803482201. The reversal of 51961803482193 is 39128430816915.

It is a happy number.

It is not a de Polignac number, because 51961803482193 - 2⁸ = 51961803481937 is a prime.

It is a super-2 number, since 2×51961803482193² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51961803482143) 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, 25396774873 + ... + 25396776918.

It is an arithmetic number, because the mean of its divisors is an integer number (4876180972032).

Almost surely, 2^{51961803482193} is an apocalyptic number.

It is an amenable number.

51961803482193 is a deficient number, since it is larger than the sum of its proper divisors (26057092070319).

51961803482193 is a wasteful number, since it uses less digits than its factorization.

51961803482193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50793551836.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 51961803482193 in words is "fifty-one trillion, nine hundred sixty-one billion, eight hundred three million, four hundred eighty-two thousand, one hundred ninety-three".