72076486637 has 2 divisors, whose sum is σ = 72076486638. Its totient is φ = 72076486636.

The previous prime is 72076486631. The next prime is 72076486673. The reversal of 72076486637 is 73668467027.

Together with next prime (72076486673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66025358116 + 6051128521 = 256954^2 + 77789^2 .

It is a cyclic number.

It is not a de Polignac number, because 72076486637 - 2⁸ = 72076486381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72076486631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36038243318 + 36038243319.

It is an arithmetic number, because the mean of its divisors is an integer number (36038243319).

Almost surely, 2^72076486637 is an apocalyptic number.

It is an amenable number.

72076486637 is a deficient number, since it is larger than the sum of its proper divisors (1).

72076486637 is an equidigital number, since it uses as much as digits as its factorization.

72076486637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 72076486637 in words is "seventy-two billion, seventy-six million, four hundred eighty-six thousand, six hundred thirty-seven".