71660151738 has 64 divisors (see below), whose sum is σ = 187864842240. Its totient is φ = 19813863600.

The previous prime is 71660151683. The next prime is 71660151743. The reversal of 71660151738 is 83715106617.

71660151738 is a `hidden beast` number, since 7 + 1 + 6 + 601 + 5 + 1 + 7 + 38 = 666.

It is a super-2 number, since 2×71660151738² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71660151693 and 71660151702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3045978 + ... + 3069413.

It is an arithmetic number, because the mean of its divisors is an integer number (2935388160).

Almost surely, 2^71660151738 is an apocalyptic number.

71660151738 is an abundant number, since it is smaller than the sum of its proper divisors (116204690502).

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

71660151738 is a wasteful number, since it uses less digits than its factorization.

71660151738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6115440 (or 6115434 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 71660151738 in words is "seventy-one billion, six hundred sixty million, one hundred fifty-one thousand, seven hundred thirty-eight".