720037213457 has 2 divisors, whose sum is σ = 720037213458. Its totient is φ = 720037213456.

The previous prime is 720037213433. The next prime is 720037213463. The reversal of 720037213457 is 754312730027.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 680750405776 + 39286807681 = 825076^2 + 198209^2 .

It is an emirp because it is prime and its reverse (754312730027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 720037213457 - 2¹⁴ = 720037197073 is a prime.

It is not a weakly prime, because it can be changed into another prime (720037213477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360018606728 + 360018606729.

It is an arithmetic number, because the mean of its divisors is an integer number (360018606729).

Almost surely, 2^720037213457 is an apocalyptic number.

It is an amenable number.

720037213457 is a deficient number, since it is larger than the sum of its proper divisors (1).

720037213457 is an equidigital number, since it uses as much as digits as its factorization.

720037213457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 720037213457 in words is "seven hundred twenty billion, thirty-seven million, two hundred thirteen thousand, four hundred fifty-seven".