6642121413510 has 48 divisors (see below), whose sum is σ = 18839471648400. Its totient is φ = 1610211251520.

The previous prime is 6642121413497. The next prime is 6642121413547. The reversal of 6642121413510 is 153141212466.

6642121413510 is a `hidden beast` number, since 6 + 6 + 4 + 2 + 121 + 4 + 13 + 510 = 666.

It is a super-4 number, since 4×6642121413510⁴ (a number of 52 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3354605785 + ... + 3354607764.

It is an arithmetic number, because the mean of its divisors is an integer number (392488992675).

Almost surely, 2^{6642121413510} is an apocalyptic number.

6642121413510 is an abundant number, since it is smaller than the sum of its proper divisors (12197350234890).

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

6642121413510 is a wasteful number, since it uses less digits than its factorization.

6642121413510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709213573 (or 6709213570 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 6642121413510 its reverse (153141212466), we get a palindrome (6795262625976).

The spelling of 6642121413510 in words is "six trillion, six hundred forty-two billion, one hundred twenty-one million, four hundred thirteen thousand, five hundred ten".