71780212932 has 24 divisors (see below), whose sum is σ = 167509952736. Its totient is φ = 23923482048.

The previous prime is 71780212927. The next prime is 71780212957. The reversal of 71780212932 is 23921208717.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314238 + ... + 492245.

It is an arithmetic number, because the mean of its divisors is an integer number (6979581364).

Almost surely, 2^71780212932 is an apocalyptic number.

It is an amenable number.

71780212932 is an abundant number, since it is smaller than the sum of its proper divisors (95729739804).

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

71780212932 is a wasteful number, since it uses less digits than its factorization.

71780212932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813907 (or 813905 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 71780212932 in words is "seventy-one billion, seven hundred eighty million, two hundred twelve thousand, nine hundred thirty-two".