633145853805 has 16 divisors (see below), whose sum is σ = 1032147204480. Its totient is φ = 331306509248.

The previous prime is 633145853803. The next prime is 633145853819. The reversal of 633145853805 is 508358541336.

It is a cyclic number.

It is not a de Polignac number, because 633145853805 - 2¹ = 633145853803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633145853803) 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, 398204145 + ... + 398205734.

It is an arithmetic number, because the mean of its divisors is an integer number (64509200280).

Almost surely, 2^633145853805 is an apocalyptic number.

It is an amenable number.

633145853805 is a deficient number, since it is larger than the sum of its proper divisors (399001350675).

633145853805 is a wasteful number, since it uses less digits than its factorization.

633145853805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796409940.

The product of its (nonzero) digits is 5184000, while the sum is 51.

It can be divided in two parts, 633145 and 853805, that added together give a triangular number (1486950 = T₁₇₂₄).

The spelling of 633145853805 in words is "six hundred thirty-three billion, one hundred forty-five million, eight hundred fifty-three thousand, eight hundred five".