6401395561090 has 16 divisors (see below), whose sum is σ = 11522577521088. Its totient is φ = 2560543666416.

The previous prime is 6401395561063. The next prime is 6401395561123. The reversal of 6401395561090 is 901655931046.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126139 + ... + 3580321.

It is an arithmetic number, because the mean of its divisors is an integer number (720161095068).

Almost surely, 2^{6401395561090} is an apocalyptic number.

6401395561090 is a deficient number, since it is larger than the sum of its proper divisors (5121181959998).

6401395561090 is a wasteful number, since it uses less digits than its factorization.

6401395561090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639513.

The product of its (nonzero) digits is 874800, while the sum is 49.

The spelling of 6401395561090 in words is "six trillion, four hundred one billion, three hundred ninety-five million, five hundred sixty-one thousand, ninety".