538153815646 has 16 divisors (see below), whose sum is σ = 854804684160. Its totient is φ = 253388525400.

The previous prime is 538153815643. The next prime is 538153815659. The reversal of 538153815646 is 646518351835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538153815643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42394680 + ... + 42407371.

It is an arithmetic number, because the mean of its divisors is an integer number (53425292760).

Almost surely, 2^538153815646 is an apocalyptic number.

538153815646 is a deficient number, since it is larger than the sum of its proper divisors (316650868514).

538153815646 is a wasteful number, since it uses less digits than its factorization.

538153815646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84802239.

The product of its digits is 10368000, while the sum is 55.

The spelling of 538153815646 in words is "five hundred thirty-eight billion, one hundred fifty-three million, eight hundred fifteen thousand, six hundred forty-six".