155151938453 has 2 divisors, whose sum is σ = 155151938454. Its totient is φ = 155151938452.

The previous prime is 155151938413. The next prime is 155151938479. The reversal of 155151938453 is 354839151551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109057136644 + 46094801809 = 330238^2 + 214697^2 .

It is a cyclic number.

It is not a de Polignac number, because 155151938453 - 2⁸ = 155151938197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155151938413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77575969226 + 77575969227.

It is an arithmetic number, because the mean of its divisors is an integer number (77575969227).

Almost surely, 2^155151938453 is an apocalyptic number.

It is an amenable number.

155151938453 is a deficient number, since it is larger than the sum of its proper divisors (1).

155151938453 is an equidigital number, since it uses as much as digits as its factorization.

155151938453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620000, while the sum is 50.

The spelling of 155151938453 in words is "one hundred fifty-five billion, one hundred fifty-one million, nine hundred thirty-eight thousand, four hundred fifty-three".