2640213401 has 8 divisors (see below), whose sum is σ = 3148577664. Its totient is φ = 2164646880.

The previous prime is 2640213383. The next prime is 2640213439. The reversal of 2640213401 is 1043120462.

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 2640213401 - 2¹⁴ = 2640197017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640213451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8199260 + ... + 8199581.

It is an arithmetic number, because the mean of its divisors is an integer number (393572208).

Almost surely, 2^2640213401 is an apocalyptic number.

It is an amenable number.

2640213401 is a deficient number, since it is larger than the sum of its proper divisors (508364263).

2640213401 is a wasteful number, since it uses less digits than its factorization.

2640213401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16398871.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2640213401 is about 51383.0069283611. The cubic root of 2640213401 is about 1382.1218846763.

Adding to 2640213401 its reverse (1043120462), we get a palindrome (3683333863).

The spelling of 2640213401 in words is "two billion, six hundred forty million, two hundred thirteen thousand, four hundred one".