12949690546 has 8 divisors (see below), whose sum is σ = 20918730924. Its totient is φ = 5976780240.

The previous prime is 12949690541. The next prime is 12949690547. The reversal of 12949690546 is 64509694921.

It can be written as a sum of positive squares in 2 ways, for example, as 12580089921 + 369600625 = 112161^2 + 19225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12949690541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249032485 + ... + 249032536.

Almost surely, 2^12949690546 is an apocalyptic number.

12949690546 is a deficient number, since it is larger than the sum of its proper divisors (7969040378).

12949690546 is a wasteful number, since it uses less digits than its factorization.

12949690546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498065036.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 12949690546 in words is "twelve billion, nine hundred forty-nine million, six hundred ninety thousand, five hundred forty-six".