21350153351 has 8 divisors (see below), whose sum is σ = 22293479040. Its totient is φ = 20408082552.

The previous prime is 21350153323. The next prime is 21350153381. The reversal of 21350153351 is 15335105312.

It is a happy number.

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 21350153351 - 2²⁶ = 21283044487 is a prime.

It is a super-2 number, since 2×21350153351² (a number of 21 digits) contains 22 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 (21350153381) 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, 278861 + ... + 347078.

It is an arithmetic number, because the mean of its divisors is an integer number (2786684880).

Almost surely, 2^21350153351 is an apocalyptic number.

21350153351 is a deficient number, since it is larger than the sum of its proper divisors (943325689).

21350153351 is a wasteful number, since it uses less digits than its factorization.

21350153351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627445.

The product of its (nonzero) digits is 6750, while the sum is 29.

Adding to 21350153351 its reverse (15335105312), we get a palindrome (36685258663).

The spelling of 21350153351 in words is "twenty-one billion, three hundred fifty million, one hundred fifty-three thousand, three hundred fifty-one".