71236261256404 has 6 divisors (see below), whose sum is σ = 124663457198714. Its totient is φ = 35618130628200.

The previous prime is 71236261256341. The next prime is 71236261256443. The reversal of 71236261256404 is 40465216263217.

It can be written as a sum of positive squares in only one way, i.e., 58313688595600 + 12922572660804 = 7636340^2 + 3594798^2 .

It is a super-2 number, since 2×71236261256404² (a number of 29 digits) contains 22 as substring.

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, 8904532657047 + ... + 8904532657054.

Almost surely, 2^{71236261256404} is an apocalyptic number.

It is an amenable number.

71236261256404 is a deficient number, since it is larger than the sum of its proper divisors (53427195942310).

71236261256404 is a wasteful number, since it uses less digits than its factorization.

71236261256404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17809065314105 (or 17809065314103 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 71236261256404 in words is "seventy-one trillion, two hundred thirty-six billion, two hundred sixty-one million, two hundred fifty-six thousand, four hundred four".