103405431644 has 6 divisors (see below), whose sum is σ = 180959505384. Its totient is φ = 51702715820.

The previous prime is 103405431643. The next prime is 103405431749. The reversal of 103405431644 is 446134504301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103405431643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12925678952 + ... + 12925678959.

It is an arithmetic number, because the mean of its divisors is an integer number (30159917564).

Almost surely, 2^103405431644 is an apocalyptic number.

It is an amenable number.

103405431644 is a deficient number, since it is larger than the sum of its proper divisors (77554073740).

103405431644 is a wasteful number, since it uses less digits than its factorization.

103405431644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851357915 (or 25851357913 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 103405431644 its reverse (446134504301), we get a palindrome (549539935945).

The spelling of 103405431644 in words is "one hundred three billion, four hundred five million, four hundred thirty-one thousand, six hundred forty-four".