155672472613 has 24 divisors (see below), whose sum is σ = 188990821080. Its totient is φ = 127692149760.

The previous prime is 155672472583. The next prime is 155672472629. The reversal of 155672472613 is 316274276551.

155672472613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27753227649 + 127919244964 = 166593^2 + 357658^2 .

It is not a de Polignac number, because 155672472613 - 2⁹ = 155672472101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155672472673) 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 23 ways as a sum of consecutive naturals, for example, 324168 + ... + 645313.

It is an arithmetic number, because the mean of its divisors is an integer number (7874617545).

Almost surely, 2^155672472613 is an apocalyptic number.

It is an amenable number.

155672472613 is a deficient number, since it is larger than the sum of its proper divisors (33318348467).

155672472613 is a wasteful number, since it uses less digits than its factorization.

155672472613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969637 (or 969630 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 49.

The spelling of 155672472613 in words is "one hundred fifty-five billion, six hundred seventy-two million, four hundred seventy-two thousand, six hundred thirteen".