71690533660 has 24 divisors (see below), whose sum is σ = 155406577536. Its totient is φ = 27751174080.

The previous prime is 71690533637. The next prime is 71690533661. The reversal of 71690533660 is 6633509617.

It is a self number, because there is not a number n which added to its sum of digits gives 71690533660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71690533661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57814327 + ... + 57815566.

It is an arithmetic number, because the mean of its divisors is an integer number (6475274064).

Almost surely, 2^71690533660 is an apocalyptic number.

It is an amenable number.

71690533660 is an abundant number, since it is smaller than the sum of its proper divisors (83716043876).

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

71690533660 is a wasteful number, since it uses less digits than its factorization.

71690533660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115629933 (or 115629931 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 46.

The spelling of 71690533660 in words is "seventy-one billion, six hundred ninety million, five hundred thirty-three thousand, six hundred sixty".