1158275207980 has 72 divisors (see below), whose sum is σ = 2677141578384. Its totient is φ = 420633924480.

The previous prime is 1158275207951. The next prime is 1158275207993. The reversal of 1158275207980 is 897025728511.

It is a happy number.

It is a super-2 number, since 2×1158275207980² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1515807 + ... + 2148073.

It is an arithmetic number, because the mean of its divisors is an integer number (37182521922).

Almost surely, 2^{1158275207980} is an apocalyptic number.

1158275207980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158275207980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338570789192).

1158275207980 is an abundant number, since it is smaller than the sum of its proper divisors (1518866370404).

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

1158275207980 is a wasteful number, since it uses less digits than its factorization.

1158275207980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633055 (or 633042 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 55.

The spelling of 1158275207980 in words is "one trillion, one hundred fifty-eight billion, two hundred seventy-five million, two hundred seven thousand, nine hundred eighty".