155432651623 has 2 divisors, whose sum is σ = 155432651624. Its totient is φ = 155432651622.

The previous prime is 155432651551. The next prime is 155432651651. The reversal of 155432651623 is 326156234551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155432651623 - 2³³ = 146842717031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155432651623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155432651323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77716325811 + 77716325812.

It is an arithmetic number, because the mean of its divisors is an integer number (77716325812).

Almost surely, 2^155432651623 is an apocalyptic number.

155432651623 is a deficient number, since it is larger than the sum of its proper divisors (1).

155432651623 is an equidigital number, since it uses as much as digits as its factorization.

155432651623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 43.

The spelling of 155432651623 in words is "one hundred fifty-five billion, four hundred thirty-two million, six hundred fifty-one thousand, six hundred twenty-three".