3645226512642 has 64 divisors (see below), whose sum is σ = 8565354040320. Its totient is φ = 1019602555200.

The previous prime is 3645226512569. The next prime is 3645226512659. The reversal of 3645226512642 is 2462156225463.

It is a junction number, because it is equal to n+sod(n) for n = 3645226512591 and 3645226512600.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25633917 + ... + 25775727.

It is an arithmetic number, because the mean of its divisors is an integer number (133833656880).

Almost surely, 2^{3645226512642} is an apocalyptic number.

3645226512642 is an abundant number, since it is smaller than the sum of its proper divisors (4920127527678).

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

3645226512642 is a wasteful number, since it uses less digits than its factorization.

3645226512642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171799.

The product of its digits is 4147200, while the sum is 48.

The spelling of 3645226512642 in words is "three trillion, six hundred forty-five billion, two hundred twenty-six million, five hundred twelve thousand, six hundred forty-two".