642145322153310 has 32 divisors (see below), whose sum is σ = 1541151146466720. Its totient is φ = 171238488874368.

The previous prime is 642145322153249. The next prime is 642145322153317. The reversal of 642145322153310 is 13351223541246.

It is a super-2 number, since 2×642145322153310² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642145322153317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3730896 + ... + 36030684.

It is an arithmetic number, because the mean of its divisors is an integer number (48160973327085).

Almost surely, 2^{642145322153310} is an apocalyptic number.

642145322153310 is an abundant number, since it is smaller than the sum of its proper divisors (899005824313410).

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

642145322153310 is a wasteful number, since it uses less digits than its factorization.

642145322153310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32962492.

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 642145322153310 its reverse (13351223541246), we get a palindrome (655496545694556).

The spelling of 642145322153310 in words is "six hundred forty-two trillion, one hundred forty-five billion, three hundred twenty-two million, one hundred fifty-three thousand, three hundred ten".