21407298151 has 4 divisors (see below), whose sum is σ = 21413130112. Its totient is φ = 21401466192.

The previous prime is 21407298131. The next prime is 21407298167. The reversal of 21407298151 is 15189270412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21407298151 - 2⁷ = 21407298023 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 (21407298131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2910471 + ... + 2917816.

It is an arithmetic number, because the mean of its divisors is an integer number (5353282528).

Almost surely, 2^21407298151 is an apocalyptic number.

21407298151 is a deficient number, since it is larger than the sum of its proper divisors (5831961).

21407298151 is an equidigital number, since it uses as much as digits as its factorization.

21407298151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5831960.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 21407298151 in words is "twenty-one billion, four hundred seven million, two hundred ninety-eight thousand, one hundred fifty-one".