155555994376 has 16 divisors (see below), whose sum is σ = 297873181440. Its totient is φ = 76123146000.

The previous prime is 155555994359. The next prime is 155555994379. The reversal of 155555994376 is 673499555551.

It is a super-2 number, since 2×155555994376² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155555994379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206856000 + ... + 206856751.

It is an arithmetic number, because the mean of its divisors is an integer number (18617073840).

Almost surely, 2^155555994376 is an apocalyptic number.

It is an amenable number.

155555994376 is a deficient number, since it is larger than the sum of its proper divisors (142317187064).

155555994376 is a wasteful number, since it uses less digits than its factorization.

155555994376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413712804 (or 413712800 counting only the distinct ones).

The product of its digits is 127575000, while the sum is 64.

It can be divided in two parts, 155 and 555994376, that added together give a triangular number (555994531 = T₃₃₃₄₆).

The spelling of 155555994376 in words is "one hundred fifty-five billion, five hundred fifty-five million, nine hundred ninety-four thousand, three hundred seventy-six".