6421202015 has 16 divisors (see below), whose sum is σ = 7961426496. Its totient is φ = 4969036800.

The previous prime is 6421201991. The next prime is 6421202063. The reversal of 6421202015 is 5102021246.

It is a happy number.

It is not a de Polignac number, because 6421202015 - 2¹² = 6421197919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151826 + ... + 189455.

It is an arithmetic number, because the mean of its divisors is an integer number (497589156).

Almost surely, 2^6421202015 is an apocalyptic number.

6421202015 is a deficient number, since it is larger than the sum of its proper divisors (1540224481).

6421202015 is a wasteful number, since it uses less digits than its factorization.

6421202015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341410.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 6421202015 is about 80132.4030277390. The cubic root of 6421202015 is about 1858.6835035102.

The spelling of 6421202015 in words is "six billion, four hundred twenty-one million, two hundred two thousand, fifteen".