645146850033474 has 32 divisors (see below), whose sum is σ = 1300845673458240. Its totient is φ = 213296557521600.

The previous prime is 645146850033473. The next prime is 645146850033527. The reversal of 645146850033474 is 474330058641546.

It is a super-2 number, since 2×645146850033474² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (645146850033473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783305917 + ... + 784129104.

It is an arithmetic number, because the mean of its divisors is an integer number (40651427295570).

Almost surely, 2^{645146850033474} is an apocalyptic number.

645146850033474 is an abundant number, since it is smaller than the sum of its proper divisors (655698823424766).

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

645146850033474 is a wasteful number, since it uses less digits than its factorization.

645146850033474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567435586.

The product of its (nonzero) digits is 116121600, while the sum is 60.

The spelling of 645146850033474 in words is "six hundred forty-five trillion, one hundred forty-six billion, eight hundred fifty million, thirty-three thousand, four hundred seventy-four".