155530719891456 has 1664 divisors, whose sum is σ = 568560634822656. Its totient is φ = 36623823667200.

The previous prime is 155530719891431. The next prime is 155530719891461. The reversal of 155530719891456 is 654198917035551.

It is a tau number, because it is divible by the number of its divisors (1664).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 55526853256 + ... + 55526856056.

Almost surely, 2^{155530719891456} is an apocalyptic number.

155530719891456 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 155530719891456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284280317411328).

155530719891456 is an abundant number, since it is smaller than the sum of its proper divisors (413029914931200).

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

155530719891456 is a wasteful number, since it uses less digits than its factorization.

155530719891456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 204120000, while the sum is 69.

The spelling of 155530719891456 in words is "one hundred fifty-five trillion, five hundred thirty billion, seven hundred nineteen million, eight hundred ninety-one thousand, four hundred fifty-six".