145431393254 has 16 divisors (see below), whose sum is σ = 250161857568. Its totient is φ = 62115015552.

The previous prime is 145431393221. The next prime is 145431393269. The reversal of 145431393254 is 452393134541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17722787 + ... + 17730990.

It is an arithmetic number, because the mean of its divisors is an integer number (15635116098).

Almost surely, 2^145431393254 is an apocalyptic number.

145431393254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145431393254 is a deficient number, since it is larger than the sum of its proper divisors (104730464314).

145431393254 is a wasteful number, since it uses less digits than its factorization.

145431393254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35454079.

The product of its digits is 777600, while the sum is 44.

The spelling of 145431393254 in words is "one hundred forty-five billion, four hundred thirty-one million, three hundred ninety-three thousand, two hundred fifty-four".