1158140861264 has 10 divisors (see below), whose sum is σ = 2243897918730. Its totient is φ = 579070430624.

The previous prime is 1158140861231. The next prime is 1158140861279. The reversal of 1158140861264 is 4621680418511.

It can be written as a sum of positive squares in only one way, i.e., 765814011664 + 392326849600 = 875108^2 + 626360^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36191901899 + ... + 36191901930.

It is an arithmetic number, because the mean of its divisors is an integer number (224389791873).

Almost surely, 2^{1158140861264} is an apocalyptic number.

It is an amenable number.

1158140861264 is a deficient number, since it is larger than the sum of its proper divisors (1085757057466).

1158140861264 is an equidigital number, since it uses as much as digits as its factorization.

1158140861264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72383803837 (or 72383803831 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 1158140861264 in words is "one trillion, one hundred fifty-eight billion, one hundred forty million, eight hundred sixty-one thousand, two hundred sixty-four".