1151906992805 has 8 divisors (see below), whose sum is σ = 1383525898872. Its totient is φ = 920700589248.

The previous prime is 1151906992801. The next prime is 1151906992837. The reversal of 1151906992805 is 5082996091511.

It can be written as a sum of positive squares in 4 ways, for example, as 179618306596 + 972288686209 = 423814^2 + 986047^2 .

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 1151906992805 - 2² = 1151906992801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151906992801) 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, 103119482 + ... + 103130651.

It is an arithmetic number, because the mean of its divisors is an integer number (172940737359).

Almost surely, 2^{1151906992805} is an apocalyptic number.

It is an amenable number.

1151906992805 is a deficient number, since it is larger than the sum of its proper divisors (231618906067).

1151906992805 is a wasteful number, since it uses less digits than its factorization.

1151906992805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206251255.

The product of its (nonzero) digits is 1749600, while the sum is 56.

The spelling of 1151906992805 in words is "one trillion, one hundred fifty-one billion, nine hundred six million, nine hundred ninety-two thousand, eight hundred five".