7748865152 has 128 divisors (see below), whose sum is σ = 19171430400. Its totient is φ = 3044459520.

The previous prime is 7748865139. The next prime is 7748865169. The reversal of 7748865152 is 2515688477.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×7748865152² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7748865094 and 7748865103.

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, 520403 + ... + 535085.

It is an arithmetic number, because the mean of its divisors is an integer number (149776800).

Almost surely, 2^7748865152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7748865152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9585715200).

7748865152 is an abundant number, since it is smaller than the sum of its proper divisors (11422565248).

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

7748865152 is a wasteful number, since it uses less digits than its factorization.

7748865152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14754 (or 14742 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 53.

The square root of 7748865152 is about 88027.6385688041. The cubic root of 7748865152 is about 1978.8492064610.

The spelling of 7748865152 in words is "seven billion, seven hundred forty-eight million, eight hundred sixty-five thousand, one hundred fifty-two".