71490843650 has 24 divisors (see below), whose sum is σ = 138754404864. Its totient is φ = 27353018000.

The previous prime is 71490843617. The next prime is 71490843653. The reversal of 71490843650 is 5634809417.

It is a super-2 number, since 2×71490843650² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71490843595 and 71490843604.

It is not an unprimeable number, because it can be changed into a prime (71490843653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31081826 + ... + 31084125.

It is an arithmetic number, because the mean of its divisors is an integer number (5781433536).

Almost surely, 2^71490843650 is an apocalyptic number.

71490843650 is a deficient number, since it is larger than the sum of its proper divisors (67263561214).

71490843650 is a wasteful number, since it uses less digits than its factorization.

71490843650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62165986 (or 62165981 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 71490843650 in words is "seventy-one billion, four hundred ninety million, eight hundred forty-three thousand, six hundred fifty".