145120401982 has 4 divisors (see below), whose sum is σ = 217680602976. Its totient is φ = 72560200990.

The previous prime is 145120401953. The next prime is 145120401989. The reversal of 145120401982 is 289104021541.

145120401982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289104021541 = 23 ⋅12569740067.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145120401989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280100494 + ... + 36280100497.

It is an arithmetic number, because the mean of its divisors is an integer number (54420150744).

Almost surely, 2^145120401982 is an apocalyptic number.

145120401982 is a deficient number, since it is larger than the sum of its proper divisors (72560200994).

145120401982 is an equidigital number, since it uses as much as digits as its factorization.

145120401982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72560200993.

The product of its (nonzero) digits is 23040, while the sum is 37.

The spelling of 145120401982 in words is "one hundred forty-five billion, one hundred twenty million, four hundred one thousand, nine hundred eighty-two".