264440440540542 has 64 divisors (see below), whose sum is σ = 605859943795200. Its totient is φ = 75376373796864.

The previous prime is 264440440540541. The next prime is 264440440540567. The reversal of 264440440540542 is 245045044044462.

It is a junction number, because it is equal to n+sod(n) for n = 264440440540491 and 264440440540500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264440440540541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145301733 + ... + 147110415.

It is an arithmetic number, because the mean of its divisors is an integer number (9466561621800).

Almost surely, 2^{264440440540542} is an apocalyptic number.

264440440540542 is an abundant number, since it is smaller than the sum of its proper divisors (341419503254658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

264440440540542 is a wasteful number, since it uses less digits than its factorization.

264440440540542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816897.

The product of its (nonzero) digits is 9830400, while the sum is 48.

The spelling of 264440440540542 in words is "two hundred sixty-four trillion, four hundred forty billion, four hundred forty million, five hundred forty thousand, five hundred forty-two".