155243700379 has 2 divisors, whose sum is σ = 155243700380. Its totient is φ = 155243700378.

The previous prime is 155243700373. The next prime is 155243700467. The reversal of 155243700379 is 973007342551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155243700379 - 2¹³ = 155243692187 is a prime.

It is not a weakly prime, because it can be changed into another prime (155243700373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77621850189 + 77621850190.

It is an arithmetic number, because the mean of its divisors is an integer number (77621850190).

Almost surely, 2^155243700379 is an apocalyptic number.

155243700379 is a deficient number, since it is larger than the sum of its proper divisors (1).

155243700379 is an equidigital number, since it uses as much as digits as its factorization.

155243700379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 155243700379 in words is "one hundred fifty-five billion, two hundred forty-three million, seven hundred thousand, three hundred seventy-nine".