1157582128840 has 32 divisors (see below), whose sum is σ = 2607946803000. Its totient is φ = 462430715904.

The previous prime is 1157582128823. The next prime is 1157582128849. The reversal of 1157582128840 is 488212857511.

It can be written as a sum of positive squares in 4 ways, for example, as 619844439204 + 537737689636 = 787302^2 + 733306^2 .

It is not an unprimeable number, because it can be changed into a prime (1157582128849) 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, 18785595 + ... + 18847114.

Almost surely, 2^{1157582128840} is an apocalyptic number.

1157582128840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157582128840 is an abundant number, since it is smaller than the sum of its proper divisors (1450364674160).

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

1157582128840 is a wasteful number, since it uses less digits than its factorization.

1157582128840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37633489 (or 37633485 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 52.

The spelling of 1157582128840 in words is "one trillion, one hundred fifty-seven billion, five hundred eighty-two million, one hundred twenty-eight thousand, eight hundred forty".