1128156100581 has 8 divisors (see below), whose sum is σ = 1504311482080. Its totient is φ = 752052393072.

The previous prime is 1128156100523. The next prime is 1128156100601. The reversal of 1128156100581 is 1850016518211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128156100581 - 2¹⁸ = 1128155838437 is a prime.

It is a super-2 number, since 2×1128156100581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128154100581) 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, 12867526 + ... + 12954903.

It is an arithmetic number, because the mean of its divisors is an integer number (188038935260).

Almost surely, 2^{1128156100581} is an apocalyptic number.

It is an amenable number.

1128156100581 is a deficient number, since it is larger than the sum of its proper divisors (376155381499).

1128156100581 is a wasteful number, since it uses less digits than its factorization.

1128156100581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25836995.

The product of its (nonzero) digits is 19200, while the sum is 39.

The spelling of 1128156100581 in words is "one trillion, one hundred twenty-eight billion, one hundred fifty-six million, one hundred thousand, five hundred eighty-one".