155275436731903 has 2 divisors, whose sum is σ = 155275436731904. Its totient is φ = 155275436731902.

The previous prime is 155275436731901. The next prime is 155275436731907. The reversal of 155275436731903 is 309137634572551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155275436731903 - 2¹ = 155275436731901 is a prime.

It is a super-2 number, since 2×155275436731903² (a number of 29 digits) contains 22 as substring.

Together with 155275436731901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155275436731901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77637718365951 + 77637718365952.

It is an arithmetic number, because the mean of its divisors is an integer number (77637718365952).

Almost surely, 2^{155275436731903} is an apocalyptic number.

155275436731903 is a deficient number, since it is larger than the sum of its proper divisors (1).

155275436731903 is an equidigital number, since it uses as much as digits as its factorization.

155275436731903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442000, while the sum is 61.

The spelling of 155275436731903 in words is "one hundred fifty-five trillion, two hundred seventy-five billion, four hundred thirty-six million, seven hundred thirty-one thousand, nine hundred three".