47515515556 has 6 divisors (see below), whose sum is σ = 83152152230. Its totient is φ = 23757757776.

The previous prime is 47515515503. The next prime is 47515515557. The reversal of 47515515556 is 65551551574.

It can be written as a sum of positive squares in only one way, i.e., 45152000100 + 2363515456 = 212490^2 + 48616^2 .

It is not an unprimeable number, because it can be changed into a prime (47515515557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5939439441 + ... + 5939439448.

Almost surely, 2^47515515556 is an apocalyptic number.

It is an amenable number.

47515515556 is a deficient number, since it is larger than the sum of its proper divisors (35636636674).

47515515556 is a wasteful number, since it uses less digits than its factorization.

47515515556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11878878893 (or 11878878891 counting only the distinct ones).

The product of its digits is 2625000, while the sum is 49.

The spelling of 47515515556 in words is "forty-seven billion, five hundred fifteen million, five hundred fifteen thousand, five hundred fifty-six".