1641564156415 has 16 divisors (see below), whose sum is σ = 2076685701120. Its totient is φ = 1243848195360.

The previous prime is 1641564156409. The next prime is 1641564156457. The reversal of 1641564156415 is 5146514651461.

It is not a de Polignac number, because 1641564156415 - 2¹¹ = 1641564154367 is a prime.

It is a congruent number.

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, 112660125 + ... + 112674694.

It is an arithmetic number, because the mean of its divisors is an integer number (129792856320).

Almost surely, 2^{1641564156415} is an apocalyptic number.

1641564156415 is a deficient number, since it is larger than the sum of its proper divisors (435121544705).

1641564156415 is a wasteful number, since it uses less digits than its factorization.

1641564156415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225334902.

The product of its digits is 1728000, while the sum is 49.

The spelling of 1641564156415 in words is "one trillion, six hundred forty-one billion, five hundred sixty-four million, one hundred fifty-six thousand, four hundred fifteen".