21060034537 has 8 divisors (see below), whose sum is σ = 22308016896. Its totient is φ = 19813069632.

The previous prime is 21060034517. The next prime is 21060034553. The reversal of 21060034537 is 73543006012.

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

It is a cyclic number.

It is not a de Polignac number, because 21060034537 - 2²³ = 21051645929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21060034499 and 21060034508.

It is not an unprimeable number, because it can be changed into a prime (21060034507) 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, 211533 + ... + 294730.

It is an arithmetic number, because the mean of its divisors is an integer number (2788502112).

Almost surely, 2^21060034537 is an apocalyptic number.

It is an amenable number.

21060034537 is a deficient number, since it is larger than the sum of its proper divisors (1247982359).

21060034537 is a wasteful number, since it uses less digits than its factorization.

21060034537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508727.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 21060034537 in words is "twenty-one billion, sixty million, thirty-four thousand, five hundred thirty-seven".