15710779812 has 192 divisors, whose sum is σ = 49132339200. Its totient is φ = 3789918720.

The previous prime is 15710779811. The next prime is 15710779859. The reversal of 15710779812 is 21897701751.

It is a super-2 number, since 2×15710779812² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (15710779811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 588637 + ... + 614747.

It is an arithmetic number, because the mean of its divisors is an integer number (255897600).

Almost surely, 2^15710779812 is an apocalyptic number.

15710779812 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 15710779812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24566169600).

15710779812 is an abundant number, since it is smaller than the sum of its proper divisors (33421559388).

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

15710779812 is a wasteful number, since it uses less digits than its factorization.

15710779812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26186 (or 26184 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 48.

The spelling of 15710779812 in words is "fifteen billion, seven hundred ten million, seven hundred seventy-nine thousand, eight hundred twelve".