21160133143246 has 16 divisors (see below), whose sum is σ = 32598416749680. Its totient is φ = 10294000784640.

The previous prime is 21160133143243. The next prime is 21160133143277. The reversal of 21160133143246 is 64234133106112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160133143243) 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, 5040126 + ... + 8229406.

It is an arithmetic number, because the mean of its divisors is an integer number (2037401046855).

Almost surely, 2^{21160133143246} is an apocalyptic number.

21160133143246 is a deficient number, since it is larger than the sum of its proper divisors (11438283606434).

21160133143246 is a wasteful number, since it uses less digits than its factorization.

21160133143246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278979.

The product of its (nonzero) digits is 62208, while the sum is 37.

Adding to 21160133143246 its reverse (64234133106112), we get a palindrome (85394266249358).

The spelling of 21160133143246 in words is "twenty-one trillion, one hundred sixty billion, one hundred thirty-three million, one hundred forty-three thousand, two hundred forty-six".