155990586551 has 2 divisors, whose sum is σ = 155990586552. Its totient is φ = 155990586550.

The previous prime is 155990586539. The next prime is 155990586581. The reversal of 155990586551 is 155685099551.

155990586551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155990586551 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155990586581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77995293275 + 77995293276.

It is an arithmetic number, because the mean of its divisors is an integer number (77995293276).

Almost surely, 2^155990586551 is an apocalyptic number.

155990586551 is a deficient number, since it is larger than the sum of its proper divisors (1).

155990586551 is an equidigital number, since it uses as much as digits as its factorization.

155990586551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150000, while the sum is 59.

The spelling of 155990586551 in words is "one hundred fifty-five billion, nine hundred ninety million, five hundred eighty-six thousand, five hundred fifty-one".