1641111510672 has 120 divisors (see below), whose sum is σ = 4880946170880. Its totient is φ = 512958458880.

The previous prime is 1641111510641. The next prime is 1641111510673. The reversal of 1641111510672 is 2760151111461.

1641111510672 is a `hidden beast` number, since 1 + 64 + 1 + 1 + 11 + 510 + 6 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1641111510673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 573472 + ... + 1900287.

It is an arithmetic number, because the mean of its divisors is an integer number (40674551424).

Almost surely, 2^{1641111510672} is an apocalyptic number.

1641111510672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641111510672 is an abundant number, since it is smaller than the sum of its proper divisors (3239834660208).

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

1641111510672 is a wasteful number, since it uses less digits than its factorization.

1641111510672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474061 (or 2474052 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 1641111510672 in words is "one trillion, six hundred forty-one billion, one hundred eleven million, five hundred ten thousand, six hundred seventy-two".