7457788550872 has 128 divisors (see below), whose sum is σ = 16136050694400. Its totient is φ = 3195782553600.

The previous prime is 7457788550857. The next prime is 7457788550887. The reversal of 7457788550872 is 2780558877547.

It is an interprime number because it is at equal distance from previous prime (7457788550857) and next prime (7457788550887).

It is a super-2 number, since 2×7457788550872² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7457788550795 and 7457788550804.

It is a congruent number.

It is an unprimeable number.

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, 785770047 + ... + 785779537.

It is an arithmetic number, because the mean of its divisors is an integer number (126062896050).

Almost surely, 2^{7457788550872} 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 7457788550872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8068025347200).

7457788550872 is an abundant number, since it is smaller than the sum of its proper divisors (8678262143528).

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

7457788550872 is a wasteful number, since it uses less digits than its factorization.

7457788550872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11777 (or 11773 counting only the distinct ones).

The product of its (nonzero) digits is 1229312000, while the sum is 73.

The spelling of 7457788550872 in words is "seven trillion, four hundred fifty-seven billion, seven hundred eighty-eight million, five hundred fifty thousand, eight hundred seventy-two".