72000005999951 has 2 divisors, whose sum is σ = 72000005999952. Its totient is φ = 72000005999950.

The previous prime is 72000005999903. The next prime is 72000006000001. The reversal of 72000005999951 is 15999950000027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72000005999951 - 2¹⁰ = 72000005998927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72000005999351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36000002999975 + 36000002999976.

It is an arithmetic number, because the mean of its divisors is an integer number (36000002999976).

Almost surely, 2^{72000005999951} is an apocalyptic number.

72000005999951 is a deficient number, since it is larger than the sum of its proper divisors (1).

72000005999951 is an equidigital number, since it uses as much as digits as its factorization.

72000005999951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2296350, while the sum is 56.

Adding to 72000005999951 its reverse (15999950000027), we get a palindrome (87999955999978).

The spelling of 72000005999951 in words is "seventy-two trillion, five million, nine hundred ninety-nine thousand, nine hundred fifty-one".