21150012162662 has 16 divisors (see below), whose sum is σ = 32269659048720. Its totient is φ = 10393536131328.

The previous prime is 21150012162661. The next prime is 21150012162673. The reversal of 21150012162662 is 26626121005112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21150012162661) 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, 18694343 + ... + 19793394.

It is an arithmetic number, because the mean of its divisors is an integer number (2016853690545).

Almost surely, 2^{21150012162662} is an apocalyptic number.

21150012162662 is a deficient number, since it is larger than the sum of its proper divisors (11119646886058).

21150012162662 is a wasteful number, since it uses less digits than its factorization.

21150012162662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38492455.

The product of its (nonzero) digits is 17280, while the sum is 35.

Adding to 21150012162662 its reverse (26626121005112), we get a palindrome (47776133167774).

The spelling of 21150012162662 in words is "twenty-one trillion, one hundred fifty billion, twelve million, one hundred sixty-two thousand, six hundred sixty-two".