47019531768 has 64 divisors (see below), whose sum is σ = 131362801920. Its totient is φ = 13900819200.

The previous prime is 47019531761. The next prime is 47019531799. The reversal of 47019531768 is 86713591074.

It is a happy number.

It is a super-2 number, since 2×47019531768² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47019531768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47019531761) 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, 2161180 + ... + 2182827.

It is an arithmetic number, because the mean of its divisors is an integer number (2052543780).

Almost surely, 2^47019531768 is an apocalyptic number.

It is an amenable number.

47019531768 is an abundant number, since it is smaller than the sum of its proper divisors (84343270152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47019531768 is a wasteful number, since it uses less digits than its factorization.

47019531768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344068 (or 4344064 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 51.

The spelling of 47019531768 in words is "forty-seven billion, nineteen million, five hundred thirty-one thousand, seven hundred sixty-eight".