264435131041556 has 6 divisors (see below), whose sum is σ = 462761479322730. Its totient is φ = 132217565520776.

The previous prime is 264435131041541. The next prime is 264435131041591. The reversal of 264435131041556 is 655140131534462.

It can be written as a sum of positive squares in only one way, i.e., 162147879712900 + 102287251328656 = 12733730^2 + 10113716^2 .

It is a super-2 number, since 2×264435131041556² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33054391380191 + ... + 33054391380198.

It is an arithmetic number, because the mean of its divisors is an integer number (77126913220455).

Almost surely, 2^{264435131041556} is an apocalyptic number.

It is an amenable number.

264435131041556 is a deficient number, since it is larger than the sum of its proper divisors (198326348281174).

264435131041556 is a wasteful number, since it uses less digits than its factorization.

264435131041556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66108782760393 (or 66108782760391 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 264435131041556 in words is "two hundred sixty-four trillion, four hundred thirty-five billion, one hundred thirty-one million, forty-one thousand, five hundred fifty-six".