145621591237188 has 48 divisors (see below), whose sum is σ = 411859045926720. Its totient is φ = 44127754920000.

The previous prime is 145621591237183. The next prime is 145621591237223. The reversal of 145621591237188 is 881732195126541.

145621591237188 is a `hidden beast` number, since 1 + 4 + 5 + 6 + 2 + 1 + 591 + 2 + 37 + 1 + 8 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (145621591237181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61288547313 + ... + 61288549688.

It is an arithmetic number, because the mean of its divisors is an integer number (8580396790140).

Almost surely, 2^{145621591237188} is an apocalyptic number.

145621591237188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

145621591237188 is an abundant number, since it is smaller than the sum of its proper divisors (266237454689532).

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

145621591237188 is a wasteful number, since it uses less digits than its factorization.

145621591237188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122577097025 (or 122577097017 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The spelling of 145621591237188 in words is "one hundred forty-five trillion, six hundred twenty-one billion, five hundred ninety-one million, two hundred thirty-seven thousand, one hundred eighty-eight".