71043051000078 has 64 divisors (see below), whose sum is σ = 161560710769920. Its totient is φ = 23128035035616.

The previous prime is 71043051000029. The next prime is 71043051000127. The reversal of 71043051000078 is 87000015034017.

71043051000078 is a `hidden beast` number, since 7 + 104 + 30 + 510 + 0 + 0 + 0 + 7 + 8 = 666.

71043051000078 is a nontrivial binomial coefficient, being equal to C(11919988, 2).

It is an interprime number because it is at equal distance from previous prime (71043051000029) and next prime (71043051000127).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22349976 + ... + 25329972.

It is an arithmetic number, because the mean of its divisors is an integer number (2524386105780).

Almost surely, 2^{71043051000078} is an apocalyptic number.

71043051000078 is the 11919987-th triangular number and also the 5959994-th hexagonal number.

71043051000078 is an abundant number, since it is smaller than the sum of its proper divisors (90517659769842).

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

71043051000078 is a wasteful number, since it uses less digits than its factorization.

71043051000078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990318 (or 2990312 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 71043051000078 in words is "seventy-one trillion, forty-three billion, fifty-one million, seventy-eight", and thus it is an aban number and an uban number.