155140423432001 has 12 divisors (see below), whose sum is σ = 180484158304260. Its totient is φ = 132966684426240.

The previous prime is 155140423431979. The next prime is 155140423432003. The reversal of 155140423432001 is 100234324041551.

It can be written as a sum of positive squares in 2 ways, for example, as 99611398263601 + 55529025168400 = 9980551^2 + 7451780^2 .

It is not a de Polignac number, because 155140423432001 - 2²² = 155140419237697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155140423432003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128217560 + ... + 129421881.

It is an arithmetic number, because the mean of its divisors is an integer number (15040346525355).

Almost surely, 2^{155140423432001} is an apocalyptic number.

It is an amenable number.

155140423432001 is a deficient number, since it is larger than the sum of its proper divisors (25343734872259).

155140423432001 is a wasteful number, since it uses less digits than its factorization.

155140423432001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257651744 (or 257651737 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 155140423432001 its reverse (100234324041551), we get a palindrome (255374747473552).

The spelling of 155140423432001 in words is "one hundred fifty-five trillion, one hundred forty billion, four hundred twenty-three million, four hundred thirty-two thousand, one".