65400554441670 has 128 divisors (see below), whose sum is σ = 185188002693120. Its totient is φ = 14465151469440.

The previous prime is 65400554441657. The next prime is 65400554441707. The reversal of 65400554441670 is 7614445500456.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 71173011 + ... + 72086049.

It is an arithmetic number, because the mean of its divisors is an integer number (1446781271040).

Almost surely, 2^{65400554441670} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65400554441670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92594001346560).

65400554441670 is an abundant number, since it is smaller than the sum of its proper divisors (119787448251450).

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

65400554441670 is a wasteful number, since it uses less digits than its factorization.

65400554441670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924090.

The product of its (nonzero) digits is 8064000, while the sum is 51.

The spelling of 65400554441670 in words is "sixty-five trillion, four hundred billion, five hundred fifty-four million, four hundred forty-one thousand, six hundred seventy".