215542203351 has 32 divisors (see below), whose sum is σ = 301188948480. Its totient is φ = 136991769600.

The previous prime is 215542203343. The next prime is 215542203389. The reversal of 215542203351 is 153302245512.

215542203351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215542203351 - 2³ = 215542203343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215542203311) 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 31 ways as a sum of consecutive naturals, for example, 877620 + ... + 1096038.

It is an arithmetic number, because the mean of its divisors is an integer number (9412154640).

Almost surely, 2^215542203351 is an apocalyptic number.

215542203351 is a deficient number, since it is larger than the sum of its proper divisors (85646745129).

215542203351 is a wasteful number, since it uses less digits than its factorization.

215542203351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218647.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 215542203351 its reverse (153302245512), we get a palindrome (368844448863).

The spelling of 215542203351 in words is "two hundred fifteen billion, five hundred forty-two million, two hundred three thousand, three hundred fifty-one".