21097246062057 has 8 divisors (see below), whose sum is σ = 30686903363040. Its totient is φ = 12786209734560.

The previous prime is 21097246062047. The next prime is 21097246062143. The reversal of 21097246062057 is 75026064279012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21097246062057 - 2⁴ = 21097246062041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21097246062037) 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, 319655243332 + ... + 319655243397.

It is an arithmetic number, because the mean of its divisors is an integer number (3835862920380).

Almost surely, 2^{21097246062057} is an apocalyptic number.

It is an amenable number.

21097246062057 is a deficient number, since it is larger than the sum of its proper divisors (9589657300983).

21097246062057 is a wasteful number, since it uses less digits than its factorization.

21097246062057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639310486743.

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 21097246062057 in words is "twenty-one trillion, ninety-seven billion, two hundred forty-six million, sixty-two thousand, fifty-seven".