6420426051610 has 8 divisors (see below), whose sum is σ = 11556766892916. Its totient is φ = 2568170420640.

The previous prime is 6420426051607. The next prime is 6420426051661. The reversal of 6420426051610 is 161506240246.

It can be written as a sum of positive squares in 2 ways, for example, as 6061448924001 + 358977127609 = 2462001^2 + 599147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6420426051610.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321021302571 + ... + 321021302590.

Almost surely, 2^{6420426051610} is an apocalyptic number.

6420426051610 is a deficient number, since it is larger than the sum of its proper divisors (5136340841306).

6420426051610 is a wasteful number, since it uses less digits than its factorization.

6420426051610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642042605168.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 6420426051610 in words is "six trillion, four hundred twenty billion, four hundred twenty-six million, fifty-one thousand, six hundred ten".