15906466949 has 16 divisors (see below), whose sum is σ = 17111777280. Its totient is φ = 14738416560.

The previous prime is 15906466913. The next prime is 15906466997. The reversal of 15906466949 is 94966460951.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15906466949 - 2²⁴ = 15889689733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15906466909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479704 + ... + 1490414.

It is an arithmetic number, because the mean of its divisors is an integer number (1069486080).

Almost surely, 2^15906466949 is an apocalyptic number.

15906466949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

15906466949 is a deficient number, since it is larger than the sum of its proper divisors (1205310331).

15906466949 is a wasteful number, since it uses less digits than its factorization.

15906466949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12440.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The spelling of 15906466949 in words is "fifteen billion, nine hundred six million, four hundred sixty-six thousand, nine hundred forty-nine".