155601431107 has 6 divisors (see below), whose sum is σ = 156255264548. Its totient is φ = 154950322212.

The previous prime is 155601431101. The next prime is 155601431123. The reversal of 155601431107 is 701134106551.

It is not a de Polignac number, because 155601431107 - 2³¹ = 153453947459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155601431101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1304913 + ... + 1419154.

Almost surely, 2^155601431107 is an apocalyptic number.

155601431107 is a deficient number, since it is larger than the sum of its proper divisors (653833441).

155601431107 is an frugal number, since it uses more digits than its factorization.

155601431107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724545 (or 2724306 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 34.

Adding to 155601431107 its reverse (701134106551), we get a palindrome (856735537658).

The spelling of 155601431107 in words is "one hundred fifty-five billion, six hundred one million, four hundred thirty-one thousand, one hundred seven".