155051440063 has 8 divisors (see below), whose sum is σ = 167052161808. Its totient is φ = 143061245184.

The previous prime is 155051440039. The next prime is 155051440097. The reversal of 155051440063 is 360044150551.

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

It is a de Polignac number, because none of the positive numbers 2^k-155051440063 is a prime.

It is a super-2 number, since 2×155051440063² (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 (155051440363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601106 + ... + 2660047.

It is an arithmetic number, because the mean of its divisors is an integer number (20881520226).

Almost surely, 2^155051440063 is an apocalyptic number.

155051440063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155051440063 is a deficient number, since it is larger than the sum of its proper divisors (12000721745).

155051440063 is a wasteful number, since it uses less digits than its factorization.

155051440063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5263433.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 155051440063 in words is "one hundred fifty-five billion, fifty-one million, four hundred forty thousand, sixty-three".