897402948751 has 4 divisors (see below), whose sum is σ = 899597088400. Its totient is φ = 895208809104.

The previous prime is 897402948709. The next prime is 897402948773. The reversal of 897402948751 is 157849204798.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157849204798 = 2 ⋅78924602399.

It is a cyclic number.

It is not a de Polignac number, because 897402948751 - 2⁷ = 897402948623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (897402948781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097069211 + ... + 1097070028.

It is an arithmetic number, because the mean of its divisors is an integer number (224899272100).

Almost surely, 2^897402948751 is an apocalyptic number.

897402948751 is a deficient number, since it is larger than the sum of its proper divisors (2194139649).

897402948751 is a wasteful number, since it uses less digits than its factorization.

897402948751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194139648.

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 897402948751 in words is "eight hundred ninety-seven billion, four hundred two million, nine hundred forty-eight thousand, seven hundred fifty-one".