71463557904 has 160 divisors (see below), whose sum is σ = 191906717184. Its totient is φ = 22901022720.

The previous prime is 71463557903. The next prime is 71463557923. The reversal of 71463557904 is 40975536417.

It is not an unprimeable number, because it can be changed into a prime (71463557903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48252844 + ... + 48254324.

Almost surely, 2^71463557904 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 71463557904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95953358592).

71463557904 is an abundant number, since it is smaller than the sum of its proper divisors (120443159280).

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

71463557904 is a wasteful number, since it uses less digits than its factorization.

71463557904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1899 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 71463557904 in words is "seventy-one billion, four hundred sixty-three million, five hundred fifty-seven thousand, nine hundred four".