47806147939949 has 32 divisors (see below), whose sum is σ = 57776549114880. Its totient is φ = 38641280020992.

The previous prime is 47806147939937. The next prime is 47806147940009. The reversal of 47806147939949 is 94993974160874.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47806147939949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47806147939549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25527974 + ... + 27336600.

It is an arithmetic number, because the mean of its divisors is an integer number (1805517159840).

Almost surely, 2^{47806147939949} is an apocalyptic number.

It is an amenable number.

47806147939949 is a deficient number, since it is larger than the sum of its proper divisors (9970401174931).

47806147939949 is a wasteful number, since it uses less digits than its factorization.

47806147939949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809569.

The product of its (nonzero) digits is 2962842624, while the sum is 80.

The spelling of 47806147939949 in words is "forty-seven trillion, eight hundred six billion, one hundred forty-seven million, nine hundred thirty-nine thousand, nine hundred forty-nine".