640630036046 has 32 divisors (see below), whose sum is σ = 1290219936768. Its totient is φ = 230396415840.

The previous prime is 640630036009. The next prime is 640630036051.

640630036046 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 159995510 + ... + 159999513.

It is an arithmetic number, because the mean of its divisors is an integer number (40319373024).

Almost surely, 2^640630036046 is an apocalyptic number.

640630036046 is an abundant number, since it is smaller than the sum of its proper divisors (649589900722).

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

640630036046 is a wasteful number, since it uses less digits than its factorization.

640630036046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319995056.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 640630036046 in words is "six hundred forty billion, six hundred thirty million, thirty-six thousand, forty-six".