1158385709640 has 64 divisors (see below), whose sum is σ = 3502520616960. Its totient is φ = 306470545920.

The previous prime is 1158385709627. The next prime is 1158385709653. The reversal of 1158385709640 is 469075838511.

It is an interprime number because it is at equal distance from previous prime (1158385709627) and next prime (1158385709653).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37989541 + ... + 38020020.

It is an arithmetic number, because the mean of its divisors is an integer number (54726884640).

Almost surely, 2^{1158385709640} is an apocalyptic number.

1158385709640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1158385709640 is an abundant number, since it is smaller than the sum of its proper divisors (2344134907320).

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

1158385709640 is a wasteful number, since it uses less digits than its factorization.

1158385709640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76009702 (or 76009698 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 1158385709640 in words is "one trillion, one hundred fifty-eight billion, three hundred eighty-five million, seven hundred nine thousand, six hundred forty".