10783721628 has 72 divisors (see below), whose sum is σ = 28186296320. Its totient is φ = 3472670880.

The previous prime is 10783721617. The next prime is 10783721633. The reversal of 10783721628 is 82612738701.

10783721628 is a `hidden beast` number, since 10 + 7 + 8 + 3 + 7 + 2 + 1 + 628 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 669453 + ... + 685371.

Almost surely, 2^10783721628 is an apocalyptic number.

10783721628 is a gapful number since it is divisible by the number (18) 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 10783721628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14093148160).

10783721628 is an abundant number, since it is smaller than the sum of its proper divisors (17402574692).

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

10783721628 is a wasteful number, since it uses less digits than its factorization.

10783721628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567 (or 16562 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 10783721628 in words is "ten billion, seven hundred eighty-three million, seven hundred twenty-one thousand, six hundred twenty-eight".