1158154873920 has 672 divisors, whose sum is σ = 4743924756480. Its totient is φ = 265983989760.

The previous prime is 1158154873919. The next prime is 1158154873921. The reversal of 1158154873920 is 293784518511.

1158154873920 is a `hidden beast` number, since 1 + 1 + 5 + 8 + 1 + 548 + 7 + 3 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1158154873919) and next prime (1158154873921).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1158154873921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16216209 + ... + 16287471.

It is an arithmetic number, because the mean of its divisors is an integer number (7059411840).

Almost surely, 2^{1158154873920} is an apocalyptic number.

1158154873920 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 1158154873920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2371962378240).

1158154873920 is an abundant number, since it is smaller than the sum of its proper divisors (3585769882560).

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

1158154873920 is a wasteful number, since it uses less digits than its factorization.

1158154873920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71325 (or 71303 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 1158154873920 in words is "one trillion, one hundred fifty-eight billion, one hundred fifty-four million, eight hundred seventy-three thousand, nine hundred twenty".