640541145046 has 64 divisors (see below), whose sum is σ = 1114835788800. Its totient is φ = 273126522240.

The previous prime is 640541145031. The next prime is 640541145067.

It is a happy number.

640541145046 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103326655 + ... + 103332853.

It is an arithmetic number, because the mean of its divisors is an integer number (17419309200).

Almost surely, 2^640541145046 is an apocalyptic number.

640541145046 is a deficient number, since it is larger than the sum of its proper divisors (474294643754).

640541145046 is a wasteful number, since it uses less digits than its factorization.

640541145046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10141.

The product of its (nonzero) digits is 230400, while the sum is 40.

It can be divided in two parts, 640541 and 145046, that added together give a palindrome (785587).

The spelling of 640541145046 in words is "six hundred forty billion, five hundred forty-one million, one hundred forty-five thousand, forty-six".