1128992977840 has 320 divisors, whose sum is σ = 3252017857536. Its totient is φ = 354954203136.

The previous prime is 1128992977823. The next prime is 1128992977843. The reversal of 1128992977840 is 487792998211.

It is not an unprimeable number, because it can be changed into a prime (1128992977843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 912685702 + ... + 912686938.

Almost surely, 2^{1128992977840} is an apocalyptic number.

1128992977840 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 1128992977840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626008928768).

1128992977840 is an abundant number, since it is smaller than the sum of its proper divisors (2123024879696).

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

1128992977840 is a wasteful number, since it uses less digits than its factorization.

1128992977840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 67.

The spelling of 1128992977840 in words is "one trillion, one hundred twenty-eight billion, nine hundred ninety-two million, nine hundred seventy-seven thousand, eight hundred forty".