145556147880 has 320 divisors, whose sum is σ = 574762003200. Its totient is φ = 32571901440.

The previous prime is 145556147857. The next prime is 145556147897. The reversal of 145556147880 is 88741655541.

145556147880 is a `hidden beast` number, since 1 + 4 + 5 + 5 + 561 + 4 + 78 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 306241 + ... + 620399.

It is an arithmetic number, because the mean of its divisors is an integer number (1796131260).

Almost surely, 2^145556147880 is an apocalyptic number.

145556147880 is a gapful number since it is divisible by the number (10) 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 145556147880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287381001600).

145556147880 is an abundant number, since it is smaller than the sum of its proper divisors (429205855320).

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

145556147880 is a wasteful number, since it uses less digits than its factorization.

145556147880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314206 (or 314193 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 54.

The spelling of 145556147880 in words is "one hundred forty-five billion, five hundred fifty-six million, one hundred forty-seven thousand, eight hundred eighty".