155521623463 has 8 divisors (see below), whose sum is σ = 159145593728. Its totient is φ = 151897980024.

The previous prime is 155521623451. The next prime is 155521623479. The reversal of 155521623463 is 364326125551.

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

It is a cyclic number.

It is not a de Polignac number, because 155521623463 - 2²⁵ = 155488069031 is a prime.

It is a super-2 number, since 2×155521623463² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155521627463) 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, 1067020 + ... + 1203982.

It is an arithmetic number, because the mean of its divisors is an integer number (19893199216).

Almost surely, 2^155521623463 is an apocalyptic number.

155521623463 is a deficient number, since it is larger than the sum of its proper divisors (3623970265).

155521623463 is a wasteful number, since it uses less digits than its factorization.

155521623463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163413.

The product of its digits is 648000, while the sum is 43.

The spelling of 155521623463 in words is "one hundred fifty-five billion, five hundred twenty-one million, six hundred twenty-three thousand, four hundred sixty-three".