155501650011101 has 4 divisors (see below), whose sum is σ = 155732707441212. Its totient is φ = 155270592580992.

The previous prime is 155501650011053. The next prime is 155501650011107. The reversal of 155501650011101 is 101110056105551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32405398745476 + 123096251265625 = 5692574^2 + 11094875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155501650011101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155501650011107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115528714046 + ... + 115528715391.

It is an arithmetic number, because the mean of its divisors is an integer number (38933176860303).

Almost surely, 2^{155501650011101} is an apocalyptic number.

It is an amenable number.

155501650011101 is a deficient number, since it is larger than the sum of its proper divisors (231057430111).

155501650011101 is an equidigital number, since it uses as much as digits as its factorization.

155501650011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231057430110.

The product of its (nonzero) digits is 3750, while the sum is 32.

The spelling of 155501650011101 in words is "one hundred fifty-five trillion, five hundred one billion, six hundred fifty million, eleven thousand, one hundred one".