71087428767412 has 6 divisors (see below), whose sum is σ = 124403000342978. Its totient is φ = 35543714383704.

The previous prime is 71087428767409. The next prime is 71087428767577. The reversal of 71087428767412 is 21476782478017.

It can be written as a sum of positive squares in only one way, i.e., 38253680721936 + 32833748045476 = 6184956^2 + 5730074^2 .

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, 8885928595923 + ... + 8885928595930.

Almost surely, 2^{71087428767412} is an apocalyptic number.

It is an amenable number.

71087428767412 is a deficient number, since it is larger than the sum of its proper divisors (53315571575566).

71087428767412 is a wasteful number, since it uses less digits than its factorization.

71087428767412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771857191857 (or 17771857191855 counting only the distinct ones).

The product of its (nonzero) digits is 59006976, while the sum is 64.

The spelling of 71087428767412 in words is "seventy-one trillion, eighty-seven billion, four hundred twenty-eight million, seven hundred sixty-seven thousand, four hundred twelve".