72273762551 has 2 divisors, whose sum is σ = 72273762552. Its totient is φ = 72273762550.

The previous prime is 72273762499. The next prime is 72273762559. The reversal of 72273762551 is 15526737227.

It is a strong prime.

It is an emirp because it is prime and its reverse (15526737227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72273762551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72273762496 and 72273762505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72273762559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36136881275 + 36136881276.

It is an arithmetic number, because the mean of its divisors is an integer number (36136881276).

Almost surely, 2^72273762551 is an apocalyptic number.

72273762551 is a deficient number, since it is larger than the sum of its proper divisors (1).

72273762551 is an equidigital number, since it uses as much as digits as its factorization.

72273762551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1234800, while the sum is 47.

The spelling of 72273762551 in words is "seventy-two billion, two hundred seventy-three million, seven hundred sixty-two thousand, five hundred fifty-one".