123445140445 has 32 divisors (see below), whose sum is σ = 170141114880. Its totient is φ = 85035666240.

The previous prime is 123445140431. The next prime is 123445140463. The reversal of 123445140445 is 544041544321.

It is not a de Polignac number, because 123445140445 - 2¹³ = 123445132253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7058602 + ... + 7076068.

It is an arithmetic number, because the mean of its divisors is an integer number (5316909840).

Almost surely, 2^123445140445 is an apocalyptic number.

It is an amenable number.

123445140445 is a deficient number, since it is larger than the sum of its proper divisors (46695974435).

123445140445 is a wasteful number, since it uses less digits than its factorization.

123445140445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24265.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 123445140445 its reverse (544041544321), we get a palindrome (667486684766).

The spelling of 123445140445 in words is "one hundred twenty-three billion, four hundred forty-five million, one hundred forty thousand, four hundred forty-five".