7561225539720 has 512 divisors, whose sum is σ = 25942400064000. Its totient is φ = 1958168494080.

The previous prime is 7561225539709. The next prime is 7561225539731. The reversal of 7561225539720 is 279355221657.

7561225539720 is a `hidden beast` number, since 7 + 5 + 6 + 1 + 225 + 5 + 397 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (7561225539709) and next prime (7561225539731).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6557870664 + ... + 6557871816.

It is an arithmetic number, because the mean of its divisors is an integer number (50668750125).

Almost surely, 2^{7561225539720} 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 7561225539720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12971200032000).

7561225539720 is an abundant number, since it is smaller than the sum of its proper divisors (18381174524280).

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

7561225539720 is a wasteful number, since it uses less digits than its factorization.

7561225539720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 7938000, while the sum is 54.

The spelling of 7561225539720 in words is "seven trillion, five hundred sixty-one billion, two hundred twenty-five million, five hundred thirty-nine thousand, seven hundred twenty".