641758347351 has 12 divisors (see below), whose sum is σ = 1011255577800. Its totient is φ = 388944452880.

The previous prime is 641758347311. The next prime is 641758347359. The reversal of 641758347351 is 153743857146.

641758347351 is a `hidden beast` number, since 6 + 4 + 1 + 7 + 583 + 4 + 7 + 3 + 51 = 666.

641758347351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641758347351 - 2¹⁵ = 641758314583 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641758347359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3241203676 + ... + 3241203873.

It is an arithmetic number, because the mean of its divisors is an integer number (84271298150).

Almost surely, 2^641758347351 is an apocalyptic number.

641758347351 is a deficient number, since it is larger than the sum of its proper divisors (369497230449).

641758347351 is a wasteful number, since it uses less digits than its factorization.

641758347351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482407566 (or 6482407563 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 641758347351 in words is "six hundred forty-one billion, seven hundred fifty-eight million, three hundred forty-seven thousand, three hundred fifty-one".