71477720364 has 12 divisors (see below), whose sum is σ = 166781347544. Its totient is φ = 23825906784.

The previous prime is 71477720359. The next prime is 71477720393. The reversal of 71477720364 is 46302777417.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2978238337 + ... + 2978238360.

Almost surely, 2^71477720364 is an apocalyptic number.

It is an amenable number.

71477720364 is an abundant number, since it is smaller than the sum of its proper divisors (95303627180).

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

71477720364 is a wasteful number, since it uses less digits than its factorization.

71477720364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956476704 (or 5956476702 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 48.

The spelling of 71477720364 in words is "seventy-one billion, four hundred seventy-seven million, seven hundred twenty thousand, three hundred sixty-four".