657146545431 has 12 divisors (see below), whose sum is σ = 930768118632. Its totient is φ = 412327243648.

The previous prime is 657146545421. The next prime is 657146545441. The reversal of 657146545431 is 134545641756.

It is an interprime number because it is at equal distance from previous prime (657146545421) and next prime (657146545441).

It is not a de Polignac number, because 657146545431 - 2⁵ = 657146545399 is a prime.

It is a super-2 number, since 2×657146545431² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657146545411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378976380 + ... + 378978113.

It is an arithmetic number, because the mean of its divisors is an integer number (77564009886).

Almost surely, 2^657146545431 is an apocalyptic number.

657146545431 is a deficient number, since it is larger than the sum of its proper divisors (273621573201).

657146545431 is a wasteful number, since it uses less digits than its factorization.

657146545431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757954530 (or 757954513 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 51.

The spelling of 657146545431 in words is "six hundred fifty-seven billion, one hundred forty-six million, five hundred forty-five thousand, four hundred thirty-one".