71490994884 has 27 divisors (see below), whose sum is σ = 180717403503. Its totient is φ = 23829796872.

The previous prime is 71490994871. The next prime is 71490994919. The reversal of 71490994884 is 48849909417.

It is a happy number.

The square root of 71490994884 is 267378.

It is a perfect power (a square), and thus also a powerful number.

71490994884 is a `hidden beast` number, since 7 + 149 + 0 + 9 + 9 + 488 + 4 = 666.

It is a super-2 number, since 2×71490994884² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1581987 + ... + 1626549.

Almost surely, 2^71490994884 is an apocalyptic number.

71490994884 is the 267378-th square number.

It is an amenable number.

71490994884 is an abundant number, since it is smaller than the sum of its proper divisors (109226408619).

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

71490994884 is an frugal number, since it uses more digits than its factorization.

71490994884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89136 (or 44568 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 71490994884 in words is "seventy-one billion, four hundred ninety million, nine hundred ninety-four thousand, eight hundred eighty-four".