264723550642 has 16 divisors (see below), whose sum is σ = 411216404760. Its totient is φ = 127661159808.

The previous prime is 264723550633. The next prime is 264723550661. The reversal of 264723550642 is 246055327462.

It can be written as a sum of positive squares in 4 ways, for example, as 207306285481 + 57417265161 = 455309^2 + 239619^2 .

It is a super-2 number, since 2×264723550642² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 264723550592 and 264723550601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2381193 + ... + 2489884.

Almost surely, 2^264723550642 is an apocalyptic number.

264723550642 is a deficient number, since it is larger than the sum of its proper divisors (146492854118).

264723550642 is a wasteful number, since it uses less digits than its factorization.

264723550642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4872045.

The product of its (nonzero) digits is 2419200, while the sum is 46.

The spelling of 264723550642 in words is "two hundred sixty-four billion, seven hundred twenty-three million, five hundred fifty thousand, six hundred forty-two".