65402081205 has 64 divisors (see below), whose sum is σ = 109486080000. Its totient is φ = 33299228160.

The previous prime is 65402081197. The next prime is 65402081279. The reversal of 65402081205 is 50218020456.

It is not a de Polignac number, because 65402081205 - 2³ = 65402081197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20649532 + ... + 20652698.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720000).

Almost surely, 2^65402081205 is an apocalyptic number.

It is an amenable number.

65402081205 is a deficient number, since it is larger than the sum of its proper divisors (44083998795).

65402081205 is a wasteful number, since it uses less digits than its factorization.

65402081205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794.

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 65402081205 in words is "sixty-five billion, four hundred two million, eighty-one thousand, two hundred five".