7601521871856 has 160 divisors (see below), whose sum is σ = 21895266041856. Its totient is φ = 2253164256000.

The previous prime is 7601521871843. The next prime is 7601521871857. The reversal of 7601521871856 is 6581781251067.

It is a junction number, because it is equal to n+sod(n) for n = 7601521871796 and 7601521871805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7601521871857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3962661 + ... + 5559291.

Almost surely, 2^{7601521871856} 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 7601521871856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10947633020928).

7601521871856 is an abundant number, since it is smaller than the sum of its proper divisors (14293744170000).

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

7601521871856 is a wasteful number, since it uses less digits than its factorization.

7601521871856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596851 (or 1596845 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 57.

The spelling of 7601521871856 in words is "seven trillion, six hundred one billion, five hundred twenty-one million, eight hundred seventy-one thousand, eight hundred fifty-six".