1540145013254 has 4 divisors (see below), whose sum is σ = 2310217519884. Its totient is φ = 770072506626.

The previous prime is 1540145013247. The next prime is 1540145013271. The reversal of 1540145013254 is 4523105410451.

It is a happy number.

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

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, 385036253312 + ... + 385036253315.

It is an arithmetic number, because the mean of its divisors is an integer number (577554379971).

Almost surely, 2^{1540145013254} is an apocalyptic number.

1540145013254 is a deficient number, since it is larger than the sum of its proper divisors (770072506630).

1540145013254 is an equidigital number, since it uses as much as digits as its factorization.

1540145013254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770072506629.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 1540145013254 in words is "one trillion, five hundred forty billion, one hundred forty-five million, thirteen thousand, two hundred fifty-four".