71078826722 has 6 divisors (see below), whose sum is σ = 106618805643. Its totient is φ = 35539224842.

The previous prime is 71078826691. The next prime is 71078826751. The reversal of 71078826722 is 22762887017.

It can be written as a sum of positive squares in only one way, i.e., 35539413361 + 35539413361 = 188519^2 + 188519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=188519.

It is a super-2 number, since 2×71078826722² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 282779 + ... + 471297.

Almost surely, 2^71078826722 is an apocalyptic number.

71078826722 is a deficient number, since it is larger than the sum of its proper divisors (35539978921).

71078826722 is an frugal number, since it uses more digits than its factorization.

71078826722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377040 (or 188521 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 50.

Multiplying 71078826722 by its sum of digits (50), we get a square (3553941336100 = 1885190²).

The spelling of 71078826722 in words is "seventy-one billion, seventy-eight million, eight hundred twenty-six thousand, seven hundred twenty-two".