155121241140451 has 2 divisors, whose sum is σ = 155121241140452. Its totient is φ = 155121241140450.

The previous prime is 155121241140413. The next prime is 155121241140487. The reversal of 155121241140451 is 154041142121551.

It is a strong prime.

It is an emirp because it is prime and its reverse (154041142121551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155121241140451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155121241140451.

It is not a weakly prime, because it can be changed into another prime (155121241140401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77560620570225 + 77560620570226.

It is an arithmetic number, because the mean of its divisors is an integer number (77560620570226).

Almost surely, 2^{155121241140451} is an apocalyptic number.

155121241140451 is a deficient number, since it is larger than the sum of its proper divisors (1).

155121241140451 is an equidigital number, since it uses as much as digits as its factorization.

155121241140451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32000, while the sum is 37.

The spelling of 155121241140451 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, two hundred forty-one million, one hundred forty thousand, four hundred fifty-one".