21346530157 has 8 divisors (see below), whose sum is σ = 22572571392. Its totient is φ = 20154079200.

The previous prime is 21346530113. The next prime is 21346530173. The reversal of 21346530157 is 75103564312.

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 21346530157 - 2¹¹ = 21346528109 is a prime.

It is a super-3 number, since 3×21346530157³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21346539157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8396263 + ... + 8398804.

It is an arithmetic number, because the mean of its divisors is an integer number (2821571424).

Almost surely, 2^21346530157 is an apocalyptic number.

It is an amenable number.

21346530157 is a deficient number, since it is larger than the sum of its proper divisors (1226041235).

21346530157 is a wasteful number, since it uses less digits than its factorization.

21346530157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795139.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 21346530157 in words is "twenty-one billion, three hundred forty-six million, five hundred thirty thousand, one hundred fifty-seven".