155720452504413 has 4 divisors (see below), whose sum is σ = 207627270005888. Its totient is φ = 103813635002940.

The previous prime is 155720452504403. The next prime is 155720452504429. The reversal of 155720452504413 is 314405254027551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 155720452504413 - 2⁵ = 155720452504381 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 (155720452504403) 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, 25953408750733 + ... + 25953408750738.

It is an arithmetic number, because the mean of its divisors is an integer number (51906817501472).

Almost surely, 2^{155720452504413} is an apocalyptic number.

It is an amenable number.

155720452504413 is a deficient number, since it is larger than the sum of its proper divisors (51906817501475).

155720452504413 is an equidigital number, since it uses as much as digits as its factorization.

155720452504413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51906817501474.

The product of its (nonzero) digits is 3360000, while the sum is 48.

The spelling of 155720452504413 in words is "one hundred fifty-five trillion, seven hundred twenty billion, four hundred fifty-two million, five hundred four thousand, four hundred thirteen".