71657676821494 has 4 divisors (see below), whose sum is σ = 107486515232244. Its totient is φ = 35828838410746.

The previous prime is 71657676821483. The next prime is 71657676821557. The reversal of 71657676821494 is 49412867675617.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17914419205372 + ... + 17914419205375.

It is an arithmetic number, because the mean of its divisors is an integer number (26871628808061).

Almost surely, 2^{71657676821494} is an apocalyptic number.

71657676821494 is a deficient number, since it is larger than the sum of its proper divisors (35828838410750).

71657676821494 is a wasteful number, since it uses less digits than its factorization.

71657676821494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35828838410749.

The product of its digits is 853493760, while the sum is 73.

The spelling of 71657676821494 in words is "seventy-one trillion, six hundred fifty-seven billion, six hundred seventy-six million, eight hundred twenty-one thousand, four hundred ninety-four".