145516019854 has 4 divisors (see below), whose sum is σ = 218274029784. Its totient is φ = 72758009926.

The previous prime is 145516019843. The next prime is 145516019963. The reversal of 145516019854 is 458910615541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 145516019798 and 145516019807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36379004962 + ... + 36379004965.

It is an arithmetic number, because the mean of its divisors is an integer number (54568507446).

Almost surely, 2^145516019854 is an apocalyptic number.

145516019854 is a deficient number, since it is larger than the sum of its proper divisors (72758009930).

145516019854 is an equidigital number, since it uses as much as digits as its factorization.

145516019854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72758009929.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 145516019854 in words is "one hundred forty-five billion, five hundred sixteen million, nineteen thousand, eight hundred fifty-four".