71043051000077 has 16 divisors (see below), whose sum is σ = 79151117598000. Its totient is φ = 63312873222144.

The previous prime is 71043051000029. The next prime is 71043051000127. The reversal of 71043051000077 is 77000015034017.

It can be written as a sum of positive squares in 8 ways, for example, as 33899072488681 + 37143978511396 = 5822291^2 + 6094586^2 .

It is a de Polignac number, because none of the positive numbers 2^k-71043051000077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71043051000377) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2 + ... + 11919987.

It is an arithmetic number, because the mean of its divisors is an integer number (4946944849875).

Almost surely, 2^{71043051000077} is an apocalyptic number.

It is an amenable number.

71043051000077 is a deficient number, since it is larger than the sum of its proper divisors (8108066597923).

71043051000077 is a wasteful number, since it uses less digits than its factorization.

71043051000077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11935840.

The product of its (nonzero) digits is 20580, while the sum is 35.

The spelling of 71043051000077 in words is "seventy-one trillion, forty-three billion, fifty-one million, seventy-seven", and thus it is an aban number and an uban number.