102203023551 has 16 divisors (see below), whose sum is σ = 137460470784. Its totient is φ = 67542688224.

The previous prime is 102203023547. The next prime is 102203023591. The reversal of 102203023551 is 155320302201.

It is a happy number.

It is not a de Polignac number, because 102203023551 - 2² = 102203023547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102203023541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94060 + ... + 461793.

It is an arithmetic number, because the mean of its divisors is an integer number (8591279424).

Almost surely, 2^102203023551 is an apocalyptic number.

102203023551 is a deficient number, since it is larger than the sum of its proper divisors (35257447233).

102203023551 is a wasteful number, since it uses less digits than its factorization.

102203023551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556390.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 102203023551 its reverse (155320302201), we get a palindrome (257523325752).

The spelling of 102203023551 in words is "one hundred two billion, two hundred three million, twenty-three thousand, five hundred fifty-one".