40026260645 has 16 divisors (see below), whose sum is σ = 55928880000. Its totient is φ = 26928717504.

The previous prime is 40026260621. The next prime is 40026260647. The reversal of 40026260645 is 54606262004.

It is a cyclic number.

It is not a de Polignac number, because 40026260645 - 2²⁰ = 40025212069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40026260647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10786895 + ... + 10790604.

It is an arithmetic number, because the mean of its divisors is an integer number (3495555000).

Almost surely, 2^40026260645 is an apocalyptic number.

It is an amenable number.

40026260645 is a deficient number, since it is larger than the sum of its proper divisors (15902619355).

40026260645 is a wasteful number, since it uses less digits than its factorization.

40026260645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21577564.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 40026260645 in words is "forty billion, twenty-six million, two hundred sixty thousand, six hundred forty-five".