47155679999 has 4 divisors (see below), whose sum is σ = 48781737960. Its totient is φ = 45529622040.

The previous prime is 47155679957. The next prime is 47155680001. The reversal of 47155679999 is 99997655174.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47155679999 - 2²⁸ = 46887244543 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 (47155679899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813028937 + ... + 813028994.

It is an arithmetic number, because the mean of its divisors is an integer number (12195434490).

Almost surely, 2^47155679999 is an apocalyptic number.

47155679999 is a deficient number, since it is larger than the sum of its proper divisors (1626057961).

47155679999 is a wasteful number, since it uses less digits than its factorization.

47155679999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626057960.

The product of its digits is 192893400, while the sum is 71.

The spelling of 47155679999 in words is "forty-seven billion, one hundred fifty-five million, six hundred seventy-nine thousand, nine hundred ninety-nine".