71511087078 has 48 divisors (see below), whose sum is σ = 164134479600. Its totient is φ = 22423961088.

The previous prime is 71511087073. The next prime is 71511087079. The reversal of 71511087078 is 87078011517.

It is a super-3 number, since 3×71511087078³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71511087073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 586626 + ... + 697962.

It is an arithmetic number, because the mean of its divisors is an integer number (3419468325).

Almost surely, 2^71511087078 is an apocalyptic number.

71511087078 is an abundant number, since it is smaller than the sum of its proper divisors (92623392522).

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

71511087078 is a wasteful number, since it uses less digits than its factorization.

71511087078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113461 (or 113458 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 45.

The spelling of 71511087078 in words is "seventy-one billion, five hundred eleven million, eighty-seven thousand, seventy-eight".