51962388461 has 2 divisors, whose sum is σ = 51962388462. Its totient is φ = 51962388460.

The previous prime is 51962388437. The next prime is 51962388539. The reversal of 51962388461 is 16488326915.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49441746025 + 2520642436 = 222355^2 + 50206^2 .

It is a cyclic number.

It is not a de Polignac number, because 51962388461 - 2¹⁸ = 51962126317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51962388421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25981194230 + 25981194231.

It is an arithmetic number, because the mean of its divisors is an integer number (25981194231).

Almost surely, 2^51962388461 is an apocalyptic number.

It is an amenable number.

51962388461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51962388461 is an equidigital number, since it uses as much as digits as its factorization.

51962388461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The spelling of 51962388461 in words is "fifty-one billion, nine hundred sixty-two million, three hundred eighty-eight thousand, four hundred sixty-one".