71278187904 has 1152 divisors, whose sum is σ = 281578752000. Its totient is φ = 17137612800.

The previous prime is 71278187899. The next prime is 71278187957. The reversal of 71278187904 is 40978187217.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2299296369 + ... + 2299296399.

It is an arithmetic number, because the mean of its divisors is an integer number (244426000).

Almost surely, 2^71278187904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71278187904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140789376000).

71278187904 is an abundant number, since it is smaller than the sum of its proper divisors (210300564096).

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

71278187904 is a wasteful number, since it uses less digits than its factorization.

71278187904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 1580544, while the sum is 54.

The spelling of 71278187904 in words is "seventy-one billion, two hundred seventy-eight million, one hundred eighty-seven thousand, nine hundred four".