6406910661000 has 64 divisors (see below), whose sum is σ = 19989561271680. Its totient is φ = 1708509508800.

The previous prime is 6406910660993. The next prime is 6406910661101. The reversal of 6406910661000 is 1660196046.

It is a self number, because there is not a number n which added to its sum of digits gives 6406910661000.

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, 1067815444 + ... + 1067821443.

It is an arithmetic number, because the mean of its divisors is an integer number (312336894870).

Almost surely, 2^{6406910661000} is an apocalyptic number.

6406910661000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6406910661000 is an abundant number, since it is smaller than the sum of its proper divisors (13582650610680).

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

6406910661000 is a wasteful number, since it uses less digits than its factorization.

6406910661000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135636911 (or 2135636897 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 6406910661000 in words is "six trillion, four hundred six billion, nine hundred ten million, six hundred sixty-one thousand".