1158041381561 has 8 divisors (see below), whose sum is σ = 1158907875840. Its totient is φ = 1157175060832.

The previous prime is 1158041381551. The next prime is 1158041381599. The reversal of 1158041381561 is 1651831408511.

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 1158041381561 - 2³⁸ = 883163474617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1158041381521) 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, 15299936 + ... + 15375438.

It is an arithmetic number, because the mean of its divisors is an integer number (144863484480).

Almost surely, 2^{1158041381561} is an apocalyptic number.

It is an amenable number.

1158041381561 is a deficient number, since it is larger than the sum of its proper divisors (866494279).

1158041381561 is an equidigital number, since it uses as much as digits as its factorization.

1158041381561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86775.

The product of its (nonzero) digits is 115200, while the sum is 44.

The spelling of 1158041381561 in words is "one trillion, one hundred fifty-eight billion, forty-one million, three hundred eighty-one thousand, five hundred sixty-one".