645070576026 has 16 divisors (see below), whose sum is σ = 1290406616928. Its totient is φ = 214979281200.

The previous prime is 645070576021. The next prime is 645070576027. The reversal of 645070576026 is 620675070546.

645070576026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×645070576026² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (645070576021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11029440 + ... + 11087771.

It is an arithmetic number, because the mean of its divisors is an integer number (80650413558).

Almost surely, 2^645070576026 is an apocalyptic number.

645070576026 is an abundant number, since it is smaller than the sum of its proper divisors (645336040902).

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

645070576026 is a wasteful number, since it uses less digits than its factorization.

645070576026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22122077.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 645070576026 in words is "six hundred forty-five billion, seventy million, five hundred seventy-six thousand, twenty-six".