1620028800253 has 16 divisors (see below), whose sum is σ = 1686554077824. Its totient is φ = 1554844524480.

The previous prime is 1620028800241. The next prime is 1620028800263. The reversal of 1620028800253 is 3520088200261.

It is a cyclic number.

It is not a de Polignac number, because 1620028800253 - 2³⁷ = 1482589846781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620028800263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191250 + ... + 1810147.

It is an arithmetic number, because the mean of its divisors is an integer number (105409629864).

Almost surely, 2^{1620028800253} is an apocalyptic number.

It is an amenable number.

1620028800253 is a deficient number, since it is larger than the sum of its proper divisors (66525277571).

1620028800253 is a wasteful number, since it uses less digits than its factorization.

1620028800253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001732.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 1620028800253 in words is "one trillion, six hundred twenty billion, twenty-eight million, eight hundred thousand, two hundred fifty-three".