1620272252547 has 12 divisors (see below), whose sum is σ = 2520423504144. Its totient is φ = 997090616880.

The previous prime is 1620272252539. The next prime is 1620272252561. The reversal of 1620272252547 is 7452522720261.

1620272252547 is a `hidden beast` number, since 1 + 62 + 0 + 2 + 7 + 22 + 525 + 47 = 666.

It is not a de Polignac number, because 1620272252547 - 2³ = 1620272252539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1620272252527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6924240279 + ... + 6924240512.

It is an arithmetic number, because the mean of its divisors is an integer number (210035292012).

Almost surely, 2^{1620272252547} is an apocalyptic number.

1620272252547 is a deficient number, since it is larger than the sum of its proper divisors (900151251597).

1620272252547 is a wasteful number, since it uses less digits than its factorization.

1620272252547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13848480810 (or 13848480807 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 1620272252547 in words is "one trillion, six hundred twenty billion, two hundred seventy-two million, two hundred fifty-two thousand, five hundred forty-seven".