40640010055 has 16 divisors (see below), whose sum is σ = 49813755264. Its totient is φ = 31815072000.

The previous prime is 40640010031. The next prime is 40640010067. The reversal of 40640010055 is 55001004604.

It is not a de Polignac number, because 40640010055 - 2⁵ = 40640010023 is a prime.

It is a super-2 number, since 2×40640010055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2105629 + ... + 2124841.

It is an arithmetic number, because the mean of its divisors is an integer number (3113359704).

Almost surely, 2^40640010055 is an apocalyptic number.

40640010055 is a deficient number, since it is larger than the sum of its proper divisors (9173745209).

40640010055 is a wasteful number, since it uses less digits than its factorization.

40640010055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28266.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 40640010055 its reverse (55001004604), we get a palindrome (95641014659).

The spelling of 40640010055 in words is "forty billion, six hundred forty million, ten thousand, fifty-five".