15940946436 has 12 divisors (see below), whose sum is σ = 37195541712. Its totient is φ = 5313648808.

The previous prime is 15940946419. The next prime is 15940946459. The reversal of 15940946436 is 63464904951.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×15940946436² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664206090 + ... + 664206113.

It is an arithmetic number, because the mean of its divisors is an integer number (3099628476).

Almost surely, 2^15940946436 is an apocalyptic number.

It is an amenable number.

15940946436 is an abundant number, since it is smaller than the sum of its proper divisors (21254595276).

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

15940946436 is a wasteful number, since it uses less digits than its factorization.

15940946436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328412210 (or 1328412208 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 15940946436 in words is "fifteen billion, nine hundred forty million, nine hundred forty-six thousand, four hundred thirty-six".