71657676821493 has 12 divisors (see below), whose sum is σ = 118292037927648. Its totient is φ = 40947243897960.

The previous prime is 71657676821483. The next prime is 71657676821557. The reversal of 71657676821493 is 39412867675617.

71657676821493 is a `hidden beast` number, since 7 + 1 + 6 + 5 + 76 + 7 + 68 + 2 + 1 + 493 = 666.

It is not a de Polignac number, because 71657676821493 - 2¹⁶ = 71657676755957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71657676821483) 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, 568711720743 + ... + 568711720868.

It is an arithmetic number, because the mean of its divisors is an integer number (9857669827304).

Almost surely, 2^{71657676821493} is an apocalyptic number.

It is an amenable number.

71657676821493 is a deficient number, since it is larger than the sum of its proper divisors (46634361106155).

71657676821493 is a wasteful number, since it uses less digits than its factorization.

71657676821493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137423441624 (or 1137423441621 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 72.

The spelling of 71657676821493 in words is "seventy-one trillion, six hundred fifty-seven billion, six hundred seventy-six million, eight hundred twenty-one thousand, four hundred ninety-three".