155401630847 has 2 divisors, whose sum is σ = 155401630848. Its totient is φ = 155401630846.

The previous prime is 155401630777. The next prime is 155401630871. The reversal of 155401630847 is 748036104551.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155401630847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155401630798 and 155401630807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155401630877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77700815423 + 77700815424.

It is an arithmetic number, because the mean of its divisors is an integer number (77700815424).

Almost surely, 2^155401630847 is an apocalyptic number.

155401630847 is a deficient number, since it is larger than the sum of its proper divisors (1).

155401630847 is an equidigital number, since it uses as much as digits as its factorization.

155401630847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 155401630847 in words is "one hundred fifty-five billion, four hundred one million, six hundred thirty thousand, eight hundred forty-seven".