155548639401 has 8 divisors (see below), whose sum is σ = 210023479680. Its totient is φ = 102386446032.

The previous prime is 155548639387. The next prime is 155548639427. The reversal of 155548639401 is 104936845551.

155548639401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155548639401 - 2¹³ = 155548631209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155548639801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328161450 + ... + 328161923.

It is an arithmetic number, because the mean of its divisors is an integer number (26252934960).

Almost surely, 2^155548639401 is an apocalyptic number.

It is an amenable number.

155548639401 is a deficient number, since it is larger than the sum of its proper divisors (54474840279).

155548639401 is an equidigital number, since it uses as much as digits as its factorization.

155548639401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656323455.

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 155548639401 in words is "one hundred fifty-five billion, five hundred forty-eight million, six hundred thirty-nine thousand, four hundred one".