640047142205110 has 64 divisors (see below), whose sum is σ = 1158160364686080. Its totient is φ = 254672197303680.

The previous prime is 640047142205047. The next prime is 640047142205137. The reversal of 640047142205110 is 11502241740046.

It is a super-2 number, since 2×640047142205110² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 640047142205110.

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, 4656750049 + ... + 4656887491.

It is an arithmetic number, because the mean of its divisors is an integer number (18096255698220).

Almost surely, 2^{640047142205110} is an apocalyptic number.

640047142205110 is a deficient number, since it is larger than the sum of its proper divisors (518113222480970).

640047142205110 is a wasteful number, since it uses less digits than its factorization.

640047142205110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140573.

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 640047142205110 its reverse (11502241740046), we get a palindrome (651549383945156).

The spelling of 640047142205110 in words is "six hundred forty trillion, forty-seven billion, one hundred forty-two million, two hundred five thousand, one hundred ten".