71507156112 has 120 divisors (see below), whose sum is σ = 229369622976. Its totient is φ = 20371638528.

The previous prime is 71507156069. The next prime is 71507156131. The reversal of 71507156112 is 21165170517.

It is a happy number.

71507156112 is a `hidden beast` number, since 7 + 15 + 0 + 71 + 561 + 12 = 666.

It is a super-2 number, since 2×71507156112² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 247558 + ... + 451994.

Almost surely, 2^71507156112 is an apocalyptic number.

71507156112 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71507156112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114684811488).

71507156112 is an abundant number, since it is smaller than the sum of its proper divisors (157862466864).

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

71507156112 is a wasteful number, since it uses less digits than its factorization.

71507156112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204805 (or 204796 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 36.

The spelling of 71507156112 in words is "seventy-one billion, five hundred seven million, one hundred fifty-six thousand, one hundred twelve".