10991925012 has 96 divisors (see below), whose sum is σ = 26813533824. Its totient is φ = 3501619200.

The previous prime is 10991925001. The next prime is 10991925017. The reversal of 10991925012 is 21052919901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991925017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9213088 + ... + 9214280.

It is an arithmetic number, because the mean of its divisors is an integer number (279307644).

Almost surely, 2^10991925012 is an apocalyptic number.

10991925012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10991925012 is an abundant number, since it is smaller than the sum of its proper divisors (15821608812).

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

10991925012 is a wasteful number, since it uses less digits than its factorization.

10991925012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 39.

The spelling of 10991925012 in words is "ten billion, nine hundred ninety-one million, nine hundred twenty-five thousand, twelve".