997375675501 has 2 divisors, whose sum is σ = 997375675502. Its totient is φ = 997375675500.

The previous prime is 997375675487. The next prime is 997375675537. The reversal of 997375675501 is 105576573799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983169419401 + 14206256100 = 991549^2 + 119190^2 .

It is a cyclic number.

It is not a de Polignac number, because 997375675501 - 2¹¹ = 997375673453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997375675601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498687837750 + 498687837751.

It is an arithmetic number, because the mean of its divisors is an integer number (498687837751).

Almost surely, 2^997375675501 is an apocalyptic number.

It is an amenable number.

997375675501 is a deficient number, since it is larger than the sum of its proper divisors (1).

997375675501 is an equidigital number, since it uses as much as digits as its factorization.

997375675501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62511750, while the sum is 64.

The spelling of 997375675501 in words is "nine hundred ninety-seven billion, three hundred seventy-five million, six hundred seventy-five thousand, five hundred one".