1078781029632 has 432 divisors, whose sum is σ = 3355027486720. Its totient is φ = 332340019200.

The previous prime is 1078781029619. The next prime is 1078781029637. The reversal of 1078781029632 is 2369201878701.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078781029637) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 339131082 + ... + 339134262.

Almost surely, 2^{1078781029632} is an apocalyptic number.

1078781029632 is a gapful number since it is divisible by the number (12) 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 1078781029632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677513743360).

1078781029632 is an abundant number, since it is smaller than the sum of its proper divisors (2276246457088).

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

1078781029632 is a wasteful number, since it uses less digits than its factorization.

1078781029632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 1078781029632 in words is "one trillion, seventy-eight billion, seven hundred eighty-one million, twenty-nine thousand, six hundred thirty-two".