215503430151 has 4 divisors (see below), whose sum is σ = 287337906872. Its totient is φ = 143668953432.

The previous prime is 215503430123. The next prime is 215503430167. The reversal of 215503430151 is 151034305512.

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

It is not a de Polignac number, because 215503430151 - 2⁹ = 215503429639 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 (215503430951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35917238356 + ... + 35917238361.

It is an arithmetic number, because the mean of its divisors is an integer number (71834476718).

Almost surely, 2^215503430151 is an apocalyptic number.

215503430151 is a deficient number, since it is larger than the sum of its proper divisors (71834476721).

215503430151 is an equidigital number, since it uses as much as digits as its factorization.

215503430151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71834476720.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 215503430151 its reverse (151034305512), we get a palindrome (366537735663).

The spelling of 215503430151 in words is "two hundred fifteen billion, five hundred three million, four hundred thirty thousand, one hundred fifty-one".