203215353465451 has 4 divisors (see below), whose sum is σ = 204698677213512. Its totient is φ = 201732029717392.

The previous prime is 203215353465419. The next prime is 203215353465461. The reversal of 203215353465451 is 154564353512302.

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 203215353465451 - 2⁵ = 203215353465419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203215353465395 and 203215353465404.

It is not an unprimeable number, because it can be changed into a prime (203215353465461) 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, 741661873825 + ... + 741661874098.

It is an arithmetic number, because the mean of its divisors is an integer number (51174669303378).

Almost surely, 2^{203215353465451} is an apocalyptic number.

203215353465451 is a deficient number, since it is larger than the sum of its proper divisors (1483323748061).

203215353465451 is a wasteful number, since it uses less digits than its factorization.

203215353465451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483323748060.

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 203215353465451 in words is "two hundred three trillion, two hundred fifteen billion, three hundred fifty-three million, four hundred sixty-five thousand, four hundred fifty-one".