155440946495 has 8 divisors (see below), whose sum is σ = 187505729280. Its totient is φ = 123701694880.

The previous prime is 155440946471. The next prime is 155440946527. The reversal of 155440946495 is 594649044551.

It is a happy number.

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

It is not a de Polignac number, because 155440946495 - 2¹⁸ = 155440684351 is a prime.

It is a super-2 number, since 2×155440946495² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155440946495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81381740 + ... + 81383649.

It is an arithmetic number, because the mean of its divisors is an integer number (23438216160).

Almost surely, 2^155440946495 is an apocalyptic number.

155440946495 is a deficient number, since it is larger than the sum of its proper divisors (32064782785).

155440946495 is a wasteful number, since it uses less digits than its factorization.

155440946495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162765585.

The product of its (nonzero) digits is 15552000, while the sum is 56.

The spelling of 155440946495 in words is "one hundred fifty-five billion, four hundred forty million, nine hundred forty-six thousand, four hundred ninety-five".