7651506512 has 20 divisors (see below), whose sum is σ = 15965163060. Its totient is φ = 3531464448.

The previous prime is 7651506481. The next prime is 7651506617. The reversal of 7651506512 is 2156051567.

It can be written as a sum of positive squares in 2 ways, for example, as 1908291856 + 5743214656 = 43684^2 + 75784^2 .

It is a super-2 number, since 2×7651506512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18392837 + ... + 18393252.

It is an arithmetic number, because the mean of its divisors is an integer number (798258153).

Almost surely, 2^7651506512 is an apocalyptic number.

It is an amenable number.

7651506512 is an abundant number, since it is smaller than the sum of its proper divisors (8313656548).

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

7651506512 is a wasteful number, since it uses less digits than its factorization.

7651506512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36786110 (or 36786104 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 7651506512 is about 87472.8901546073. The cubic root of 7651506512 is about 1970.5266710062.

The spelling of 7651506512 in words is "seven billion, six hundred fifty-one million, five hundred six thousand, five hundred twelve".