1611667051243 has 8 divisors (see below), whose sum is σ = 1641381052896. Its totient is φ = 1582147896000.

The previous prime is 1611667051231. The next prime is 1611667051271. The reversal of 1611667051243 is 3421507661161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1611667051243 - 2²¹ = 1611664954091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1611667051243.

It is not an unprimeable number, because it can be changed into a prime (1611667051843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48694908 + ... + 48727993.

It is an arithmetic number, because the mean of its divisors is an integer number (205172631612).

Almost surely, 2^{1611667051243} is an apocalyptic number.

1611667051243 is a deficient number, since it is larger than the sum of its proper divisors (29714001653).

1611667051243 is an equidigital number, since it uses as much as digits as its factorization.

1611667051243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97423205.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 1611667051243 in words is "one trillion, six hundred eleven billion, six hundred sixty-seven million, fifty-one thousand, two hundred forty-three".