15820656072 has 32 divisors (see below), whose sum is σ = 42594074880. Its totient is φ = 4867894080.

The previous prime is 15820656031. The next prime is 15820656083. The reversal of 15820656072 is 27065602851.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25353304 + ... + 25353927.

It is an arithmetic number, because the mean of its divisors is an integer number (1331064840).

Almost surely, 2^15820656072 is an apocalyptic number.

15820656072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15820656072 is an abundant number, since it is smaller than the sum of its proper divisors (26773418808).

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

15820656072 is a wasteful number, since it uses less digits than its factorization.

15820656072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50707253 (or 50707249 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 15820656072 in words is "fifteen billion, eight hundred twenty million, six hundred fifty-six thousand, seventy-two".