7271506512 has 80 divisors (see below), whose sum is σ = 20888296000. Its totient is φ = 2421933696.

The previous prime is 7271506483. The next prime is 7271506531. The reversal of 7271506512 is 2156051727.

7271506512 is a `hidden beast` number, since 72 + 71 + 5 + 0 + 6 + 512 = 666.

It is a super-2 number, since 2×7271506512² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611439 + ... + 623217.

It is an arithmetic number, because the mean of its divisors is an integer number (261103700).

Almost surely, 2^7271506512 is an apocalyptic number.

7271506512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7271506512 is an abundant number, since it is smaller than the sum of its proper divisors (13616789488).

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

7271506512 is a wasteful number, since it uses less digits than its factorization.

7271506512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225 (or 13213 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 7271506512 is about 85273.1288976780. The cubic root of 7271506512 is about 1937.3502024569.

The spelling of 7271506512 in words is "seven billion, two hundred seventy-one million, five hundred six thousand, five hundred twelve".