641545346466 has 64 divisors (see below), whose sum is σ = 1465329369600. Its totient is φ = 207906507648.

The previous prime is 641545346461. The next prime is 641545346479. The reversal of 641545346466 is 664643545146.

641545346466 is a `hidden beast` number, since 6 + 4 + 1 + 545 + 34 + 6 + 4 + 66 = 666.

641545346466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (641545346461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2450871 + ... + 2699973.

It is an arithmetic number, because the mean of its divisors is an integer number (22895771400).

Almost surely, 2^641545346466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641545346466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732664684800).

641545346466 is an abundant number, since it is smaller than the sum of its proper divisors (823784023134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641545346466 is a wasteful number, since it uses less digits than its factorization.

641545346466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250440 (or 250434 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 54.

The spelling of 641545346466 in words is "six hundred forty-one billion, five hundred forty-five million, three hundred forty-six thousand, four hundred sixty-six".