1065394197505 has 16 divisors (see below), whose sum is σ = 1394852773248. Its totient is φ = 774746080000.

The previous prime is 1065394197499. The next prime is 1065394197577. The reversal of 1065394197505 is 5057914935601.

It is not a de Polignac number, because 1065394197505 - 2⁵ = 1065394197473 is a prime.

It is a super-2 number, since 2×1065394197505² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 574021 + ... + 1568530.

It is an arithmetic number, because the mean of its divisors is an integer number (87178298328).

Almost surely, 2^{1065394197505} is an apocalyptic number.

It is an amenable number.

1065394197505 is a deficient number, since it is larger than the sum of its proper divisors (329458575743).

1065394197505 is a wasteful number, since it uses less digits than its factorization.

1065394197505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151608.

The product of its (nonzero) digits is 5103000, while the sum is 55.

The spelling of 1065394197505 in words is "one trillion, sixty-five billion, three hundred ninety-four million, one hundred ninety-seven thousand, five hundred five".