1620424252536 has 16 divisors (see below), whose sum is σ = 4051060631400. Its totient is φ = 540141417504.

The previous prime is 1620424252507. The next prime is 1620424252547. The reversal of 1620424252536 is 6352524240261.

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 3 ways as a sum of consecutive naturals, for example, 33758838571 + ... + 33758838618.

Almost surely, 2^{1620424252536} is an apocalyptic number.

It is an amenable number.

1620424252536 is an abundant number, since it is smaller than the sum of its proper divisors (2430636378864).

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

1620424252536 is a wasteful number, since it uses less digits than its factorization.

1620424252536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67517677198 (or 67517677194 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 1620424252536 its reverse (6352524240261), we get a palindrome (7972948492797).

The spelling of 1620424252536 in words is "one trillion, six hundred twenty billion, four hundred twenty-four million, two hundred fifty-two thousand, five hundred thirty-six".