155151221552363 has 2 divisors, whose sum is σ = 155151221552364. Its totient is φ = 155151221552362.

The previous prime is 155151221552351. The next prime is 155151221552449. The reversal of 155151221552363 is 363255122151551.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155151221552363 is a prime.

It is not a weakly prime, because it can be changed into another prime (155151221552303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77575610776181 + 77575610776182.

It is an arithmetic number, because the mean of its divisors is an integer number (77575610776182).

Almost surely, 2^{155151221552363} is an apocalyptic number.

155151221552363 is a deficient number, since it is larger than the sum of its proper divisors (1).

155151221552363 is an equidigital number, since it uses as much as digits as its factorization.

155151221552363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350000, while the sum is 47.

The spelling of 155151221552363 in words is "one hundred fifty-five trillion, one hundred fifty-one billion, two hundred twenty-one million, five hundred fifty-two thousand, three hundred sixty-three".