642153351246 has 32 divisors (see below), whose sum is σ = 1401475516416. Its totient is φ = 194534472000.

The previous prime is 642153351239. The next prime is 642153351247.

642153351246 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 642153351198 and 642153351207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642153351247) 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, 1210815 + ... + 1658426.

It is an arithmetic number, because the mean of its divisors is an integer number (43796109888).

Almost surely, 2^642153351246 is an apocalyptic number.

642153351246 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

642153351246 is an abundant number, since it is smaller than the sum of its proper divisors (759322165170).

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

642153351246 is a wasteful number, since it uses less digits than its factorization.

642153351246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872648.

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

It can be divided in two parts, 642153 and 351246, that added together give a palindrome (993399).

The spelling of 642153351246 in words is "six hundred forty-two billion, one hundred fifty-three million, three hundred fifty-one thousand, two hundred forty-six".