155500303546631 has 4 divisors (see below), whose sum is σ = 162261186309552. Its totient is φ = 148739420783712.

The previous prime is 155500303546583. The next prime is 155500303546661. The reversal of 155500303546631 is 136645303005551.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155500303546631 is a prime.

It is a super-2 number, since 2×155500303546631² (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 (155500303546661) 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, 3380441381426 + ... + 3380441381471.

It is an arithmetic number, because the mean of its divisors is an integer number (40565296577388).

Almost surely, 2^{155500303546631} is an apocalyptic number.

155500303546631 is a deficient number, since it is larger than the sum of its proper divisors (6760882762921).

155500303546631 is an equidigital number, since it uses as much as digits as its factorization.

155500303546631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760882762920.

The product of its (nonzero) digits is 2430000, while the sum is 47.

The spelling of 155500303546631 in words is "one hundred fifty-five trillion, five hundred billion, three hundred three million, five hundred forty-six thousand, six hundred thirty-one".