155403010772 has 6 divisors (see below), whose sum is σ = 271955268858. Its totient is φ = 77701505384.

The previous prime is 155403010759. The next prime is 155403010783. The reversal of 155403010772 is 277010304551.

155403010772 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 only one way, i.e., 98699018896 + 56703991876 = 314164^2 + 238126^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19425376343 + ... + 19425376350.

It is an arithmetic number, because the mean of its divisors is an integer number (45325878143).

Almost surely, 2^155403010772 is an apocalyptic number.

It is an amenable number.

155403010772 is a deficient number, since it is larger than the sum of its proper divisors (116552258086).

155403010772 is a wasteful number, since it uses less digits than its factorization.

155403010772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38850752697 (or 38850752695 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 155403010772 in words is "one hundred fifty-five billion, four hundred three million, ten thousand, seven hundred seventy-two".