78572349016 has 32 divisors (see below), whose sum is σ = 168378336000. Its totient is φ = 33672060576.

The previous prime is 78572348989. The next prime is 78572349019. The reversal of 78572349016 is 61094327587.

It is a super-2 number, since 2×78572349016² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78572349019) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1921795 + ... + 1962253.

It is an arithmetic number, because the mean of its divisors is an integer number (5261823000).

It is a 2-persistent number, because it is pandigital, and so is 2⋅78572349016 = 157144698032, but 3⋅78572349016 = 235717047048 is not.

Almost surely, 2^78572349016 is an apocalyptic number.

78572349016 is the 161836-th octagonal number.

It is an amenable number.

78572349016 is an abundant number, since it is smaller than the sum of its proper divisors (89805986984).

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

78572349016 is a wasteful number, since it uses less digits than its factorization.

78572349016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75151 (or 75147 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 78572349016 in words is "seventy-eight billion, five hundred seventy-two million, three hundred forty-nine thousand, sixteen".