645052541624034 has 32 divisors (see below), whose sum is σ = 1358057856526080. Its totient is φ = 203692926757392.

The previous prime is 645052541624021. The next prime is 645052541624041. The reversal of 645052541624034 is 430426145250546.

It is a super-2 number, since 2×645052541624034² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106425184 + ... + 112322859.

It is an arithmetic number, because the mean of its divisors is an integer number (42439308016440).

Almost surely, 2^{645052541624034} is an apocalyptic number.

645052541624034 is an abundant number, since it is smaller than the sum of its proper divisors (713005314902046).

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

645052541624034 is a wasteful number, since it uses less digits than its factorization.

645052541624034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218773934.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 645052541624034 in words is "six hundred forty-five trillion, fifty-two billion, five hundred forty-one million, six hundred twenty-four thousand, thirty-four".