155278357157 has 16 divisors (see below), whose sum is σ = 193705160064. Its totient is φ = 120926520000.

The previous prime is 155278357139. The next prime is 155278357181. The reversal of 155278357157 is 751753872551.

It is a happy number.

155278357157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155278357157 - 2³⁰ = 154204615333 is a prime.

It is a super-2 number, since 2×155278357157² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155278357127) 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 15 ways as a sum of consecutive naturals, for example, 445094 + ... + 713207.

It is an arithmetic number, because the mean of its divisors is an integer number (12106572504).

Almost surely, 2^155278357157 is an apocalyptic number.

It is an amenable number.

155278357157 is a deficient number, since it is larger than the sum of its proper divisors (38426802907).

155278357157 is a wasteful number, since it uses less digits than its factorization.

155278357157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160060.

The product of its digits is 10290000, while the sum is 56.

The spelling of 155278357157 in words is "one hundred fifty-five billion, two hundred seventy-eight million, three hundred fifty-seven thousand, one hundred fifty-seven".