640362263046 has 16 divisors (see below), whose sum is σ = 1397154028608. Its totient is φ = 194049170600.

The previous prime is 640362263003. The next prime is 640362263077.

640362263046 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 640362262989 and 640362263007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4851229200 + ... + 4851229331.

It is an arithmetic number, because the mean of its divisors is an integer number (87322126788).

Almost surely, 2^640362263046 is an apocalyptic number.

640362263046 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

640362263046 is an abundant number, since it is smaller than the sum of its proper divisors (756791765562).

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

640362263046 is a wasteful number, since it uses less digits than its factorization.

640362263046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9702458547.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 640362263046 in words is "six hundred forty billion, three hundred sixty-two million, two hundred sixty-three thousand, forty-six".