21148611337 has 64 divisors (see below), whose sum is σ = 26671680000. Its totient is φ = 16701382656.

The previous prime is 21148611331. The next prime is 21148611391. The reversal of 21148611337 is 73311684112.

It is not a de Polignac number, because 21148611337 - 2²³ = 21140222729 is a prime.

It is a super-2 number, since 2×21148611337² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21148611296 and 21148611305.

It is not an unprimeable number, because it can be changed into a prime (21148611331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 78619239 + ... + 78619507.

It is an arithmetic number, because the mean of its divisors is an integer number (416745000).

Almost surely, 2^21148611337 is an apocalyptic number.

It is an amenable number.

21148611337 is a deficient number, since it is larger than the sum of its proper divisors (5523068663).

21148611337 is a wasteful number, since it uses less digits than its factorization.

21148611337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 529 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The spelling of 21148611337 in words is "twenty-one billion, one hundred forty-eight million, six hundred eleven thousand, three hundred thirty-seven".