155612380039 has 2 divisors, whose sum is σ = 155612380040. Its totient is φ = 155612380038.

The previous prime is 155612380009. The next prime is 155612380051. The reversal of 155612380039 is 930083216551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155612380039 - 2⁷ = 155612379911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155612379977 and 155612380004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155612380009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77806190019 + 77806190020.

It is an arithmetic number, because the mean of its divisors is an integer number (77806190020).

Almost surely, 2^155612380039 is an apocalyptic number.

155612380039 is a deficient number, since it is larger than the sum of its proper divisors (1).

155612380039 is an equidigital number, since it uses as much as digits as its factorization.

155612380039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 155612380039 in words is "one hundred fifty-five billion, six hundred twelve million, three hundred eighty thousand, thirty-nine".