21357133061662 has 16 divisors (see below), whose sum is σ = 32051750030784. Its totient is φ = 10673217700000.

The previous prime is 21357133061647. The next prime is 21357133061669. The reversal of 21357133061662 is 26616033175312.

It is a super-2 number, since 2×21357133061662² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21357133061669) 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, 32561712 + ... + 33211132.

It is an arithmetic number, because the mean of its divisors is an integer number (2003234376924).

Almost surely, 2^{21357133061662} is an apocalyptic number.

21357133061662 is a deficient number, since it is larger than the sum of its proper divisors (10694616969122).

21357133061662 is a wasteful number, since it uses less digits than its factorization.

21357133061662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657635.

The product of its (nonzero) digits is 816480, while the sum is 46.

The spelling of 21357133061662 in words is "twenty-one trillion, three hundred fifty-seven billion, one hundred thirty-three million, sixty-one thousand, six hundred sixty-two".