155406666218496 has 1584 divisors, whose sum is σ = 567633351011328. Its totient is φ = 37527005429760.

The previous prime is 155406666218483. The next prime is 155406666218509. The reversal of 155406666218496 is 694812666604551.

It is an interprime number because it is at equal distance from previous prime (155406666218483) and next prime (155406666218509).

It is a self number, because there is not a number n which added to its sum of digits gives 155406666218496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 25699792945 + ... + 25699798991.

Almost surely, 2^{155406666218496} is an apocalyptic number.

155406666218496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155406666218496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283816675505664).

155406666218496 is an abundant number, since it is smaller than the sum of its proper divisors (412226684792832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155406666218496 is a wasteful number, since it uses less digits than its factorization.

155406666218496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206 (or 6170 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 69.

The spelling of 155406666218496 in words is "one hundred fifty-five trillion, four hundred six billion, six hundred sixty-six million, two hundred eighteen thousand, four hundred ninety-six".