997347937451 has 2 divisors, whose sum is σ = 997347937452. Its totient is φ = 997347937450.

The previous prime is 997347937429. The next prime is 997347937459. The reversal of 997347937451 is 154739743799.

997347937451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997347937451 - 2⁶ = 997347937387 is a prime.

It is not a weakly prime, because it can be changed into another prime (997347937459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498673968725 + 498673968726.

It is an arithmetic number, because the mean of its divisors is an integer number (498673968726).

Almost surely, 2^997347937451 is an apocalyptic number.

997347937451 is a deficient number, since it is larger than the sum of its proper divisors (1).

997347937451 is an equidigital number, since it uses as much as digits as its factorization.

997347937451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 180033840, while the sum is 68.

The spelling of 997347937451 in words is "nine hundred ninety-seven billion, three hundred forty-seven million, nine hundred thirty-seven thousand, four hundred fifty-one".