640029869004 has 48 divisors (see below), whose sum is σ = 1525730614016. Its totient is φ = 208767240000.

The previous prime is 640029868999. The next prime is 640029869009. The reversal of 640029869004 is 400968920046.

640029869004 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (640029868999) and next prime (640029869009).

It is not an unprimeable number, because it can be changed into a prime (640029869009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514547 + ... + 2757354.

Almost surely, 2^640029869004 is an apocalyptic number.

It is an amenable number.

640029869004 is an abundant number, since it is smaller than the sum of its proper divisors (885700745012).

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

640029869004 is a wasteful number, since it uses less digits than its factorization.

640029869004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272126 (or 5272124 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 640029869004 in words is "six hundred forty billion, twenty-nine million, eight hundred sixty-nine thousand, four".