45251181780123 has 16 divisors (see below), whose sum is σ = 66107323929600. Its totient is φ = 27305199005280.

The previous prime is 45251181780097. The next prime is 45251181780143. The reversal of 45251181780123 is 32108718115254.

It is not a de Polignac number, because 45251181780123 - 2⁶ = 45251181780059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45251181780143) 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, 2993983563 + ... + 2993998676.

It is an arithmetic number, because the mean of its divisors is an integer number (4131707745600).

Almost surely, 2^{45251181780123} is an apocalyptic number.

45251181780123 is a deficient number, since it is larger than the sum of its proper divisors (20856142149477).

45251181780123 is a wasteful number, since it uses less digits than its factorization.

45251181780123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987982482.

The product of its (nonzero) digits is 537600, while the sum is 48.

Adding to 45251181780123 its reverse (32108718115254), we get a palindrome (77359899895377).

The spelling of 45251181780123 in words is "forty-five trillion, two hundred fifty-one billion, one hundred eighty-one million, seven hundred eighty thousand, one hundred twenty-three".