51494372999 has 2 divisors, whose sum is σ = 51494373000. Its totient is φ = 51494372998.

The previous prime is 51494372987. The next prime is 51494373011. The reversal of 51494372999 is 99927349415.

It is a balanced prime because it is at equal distance from previous prime (51494372987) and next prime (51494373011).

It is a cyclic number.

It is not a de Polignac number, because 51494372999 - 2¹⁶ = 51494307463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51494372099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25747186499 + 25747186500.

It is an arithmetic number, because the mean of its divisors is an integer number (25747186500).

Almost surely, 2^51494372999 is an apocalyptic number.

51494372999 is a deficient number, since it is larger than the sum of its proper divisors (1).

51494372999 is an equidigital number, since it uses as much as digits as its factorization.

51494372999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22044960, while the sum is 62.

The spelling of 51494372999 in words is "fifty-one billion, four hundred ninety-four million, three hundred seventy-two thousand, nine hundred ninety-nine".