47815067647 has 16 divisors (see below), whose sum is σ = 50371835904. Its totient is φ = 45330012000.

The previous prime is 47815067621. The next prime is 47815067669. The reversal of 47815067647 is 74676051874.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47815067647 is a prime.

It is a super-2 number, since 2×47815067647² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47815067347) 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, 276372 + ... + 414742.

It is an arithmetic number, because the mean of its divisors is an integer number (3148239744).

Almost surely, 2^47815067647 is an apocalyptic number.

47815067647 is a deficient number, since it is larger than the sum of its proper divisors (2556768257).

47815067647 is a wasteful number, since it uses less digits than its factorization.

47815067647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138630.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 47815067647 in words is "forty-seven billion, eight hundred fifteen million, sixty-seven thousand, six hundred forty-seven".