640054460111 has 8 divisors (see below), whose sum is σ = 698267626704. Its totient is φ = 581845693120.

The previous prime is 640054460057. The next prime is 640054460119. The reversal of 640054460111 is 111064450046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 640054460111 - 2²² = 640050265807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640054460119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791960 + ... + 1381053.

It is an arithmetic number, because the mean of its divisors is an integer number (87283453338).

Almost surely, 2^640054460111 is an apocalyptic number.

640054460111 is a deficient number, since it is larger than the sum of its proper divisors (58213166593).

640054460111 is a wasteful number, since it uses less digits than its factorization.

640054460111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199801.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 640054460111 in words is "six hundred forty billion, fifty-four million, four hundred sixty thousand, one hundred eleven".