78571508732 has 6 divisors (see below), whose sum is σ = 137500140288. Its totient is φ = 39285754364.

The previous prime is 78571508731. The next prime is 78571508737. The reversal of 78571508732 is 23780517587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78571508731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9821438588 + ... + 9821438595.

It is an arithmetic number, because the mean of its divisors is an integer number (22916690048).

Almost surely, 2^78571508732 is an apocalyptic number.

It is an amenable number.

78571508732 is a deficient number, since it is larger than the sum of its proper divisors (58928631556).

78571508732 is a wasteful number, since it uses less digits than its factorization.

78571508732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19642877187 (or 19642877185 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 53.

The spelling of 78571508732 in words is "seventy-eight billion, five hundred seventy-one million, five hundred eight thousand, seven hundred thirty-two".