203125012152643 has 64 divisors (see below), whose sum is σ = 246713352192000. Its totient is φ = 163360473179904.

The previous prime is 203125012152617. The next prime is 203125012152679. The reversal of 203125012152643 is 346251210521302.

It is a happy number.

203125012152643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-203125012152643 is a prime.

It is a super-2 number, since 2×203125012152643² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203125012152043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51698906703 + ... + 51698910631.

It is an arithmetic number, because the mean of its divisors is an integer number (3854896128000).

Almost surely, 2^{203125012152643} is an apocalyptic number.

203125012152643 is a deficient number, since it is larger than the sum of its proper divisors (43588340039357).

203125012152643 is a wasteful number, since it uses less digits than its factorization.

203125012152643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8624.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 203125012152643 its reverse (346251210521302), we get a palindrome (549376222673945).

The spelling of 203125012152643 in words is "two hundred three trillion, one hundred twenty-five billion, twelve million, one hundred fifty-two thousand, six hundred forty-three".