155450123361101 has 4 divisors (see below), whose sum is σ = 155592346713852. Its totient is φ = 155307900008352.

The previous prime is 155450123361089. The next prime is 155450123361157. The reversal of 155450123361101 is 101163321054551.

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 148465208236900 + 6984915124201 = 12184630^2 + 2642899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155450123361101 is a prime.

It is a super-2 number, since 2×155450123361101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155450123361601) 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, 71111674736 + ... + 71111676921.

It is an arithmetic number, because the mean of its divisors is an integer number (38898086678463).

Almost surely, 2^{155450123361101} is an apocalyptic number.

It is an amenable number.

155450123361101 is a deficient number, since it is larger than the sum of its proper divisors (142223352751).

155450123361101 is a wasteful number, since it uses less digits than its factorization.

155450123361101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142223352750.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 155450123361101 in words is "one hundred fifty-five trillion, four hundred fifty billion, one hundred twenty-three million, three hundred sixty-one thousand, one hundred one".