155942363249551 has 4 divisors (see below), whose sum is σ = 156813549636600. Its totient is φ = 155071176862504.

The previous prime is 155942363249479. The next prime is 155942363249599.

155942363249551 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155942363249551 - 2⁷ = 155942363249423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155942363247551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435593193256 + ... + 435593193613.

It is an arithmetic number, because the mean of its divisors is an integer number (39203387409150).

Almost surely, 2^{155942363249551} is an apocalyptic number.

155942363249551 is a deficient number, since it is larger than the sum of its proper divisors (871186387049).

155942363249551 is an equidigital number, since it uses as much as digits as its factorization.

155942363249551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871186387048.

The product of its digits is 174960000, while the sum is 64.

The spelling of 155942363249551 in words is "one hundred fifty-five trillion, nine hundred forty-two billion, three hundred sixty-three million, two hundred forty-nine thousand, five hundred fifty-one".