77252030272521 has 48 divisors (see below), whose sum is σ = 123789738072000. Its totient is φ = 46122497318016.

The previous prime is 77252030272513. The next prime is 77252030272541. The reversal of 77252030272521 is 12527203025277.

77252030272521 is a `hidden beast` number, since 7 + 7 + 2 + 5 + 20 + 30 + 2 + 72 + 521 = 666.

It is not a de Polignac number, because 77252030272521 - 2³ = 77252030272513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77252030272541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50777911 + ... + 52277148.

It is an arithmetic number, because the mean of its divisors is an integer number (2578952876500).

Almost surely, 2^{77252030272521} is an apocalyptic number.

It is an amenable number.

77252030272521 is a deficient number, since it is larger than the sum of its proper divisors (46537707799479).

77252030272521 is a wasteful number, since it uses less digits than its factorization.

77252030272521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103055270 (or 103055267 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

Adding to 77252030272521 its reverse (12527203025277), we get a palindrome (89779233297798).

The spelling of 77252030272521 in words is "seventy-seven trillion, two hundred fifty-two billion, thirty million, two hundred seventy-two thousand, five hundred twenty-one".