21374400420151 has 8 divisors (see below), whose sum is σ = 21568379535360. Its totient is φ = 21180822504408.

The previous prime is 21374400420119. The next prime is 21374400420169. The reversal of 21374400420151 is 15102400447312.

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 21374400420151 - 2⁵ = 21374400420119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21374400400151) 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, 100192831 + ... + 100405936.

It is an arithmetic number, because the mean of its divisors is an integer number (2696047441920).

Almost surely, 2^{21374400420151} is an apocalyptic number.

21374400420151 is a deficient number, since it is larger than the sum of its proper divisors (193979115209).

21374400420151 is a wasteful number, since it uses less digits than its factorization.

21374400420151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200599733.

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 21374400420151 its reverse (15102400447312), we get a palindrome (36476800867463).

The spelling of 21374400420151 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred million, four hundred twenty thousand, one hundred fifty-one".