145461657742 has 4 divisors (see below), whose sum is σ = 218192486616. Its totient is φ = 72730828870.

The previous prime is 145461657727. The next prime is 145461657749. The reversal of 145461657742 is 247756164541.

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

It is a self number, because there is not a number n which added to its sum of digits gives 145461657742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145461657749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36365414434 + ... + 36365414437.

It is an arithmetic number, because the mean of its divisors is an integer number (54548121654).

Almost surely, 2^145461657742 is an apocalyptic number.

145461657742 is a deficient number, since it is larger than the sum of its proper divisors (72730828874).

145461657742 is an equidigital number, since it uses as much as digits as its factorization.

145461657742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72730828873.

The product of its digits is 5644800, while the sum is 52.

The spelling of 145461657742 in words is "one hundred forty-five billion, four hundred sixty-one million, six hundred fifty-seven thousand, seven hundred forty-two".