1540778048475 has 24 divisors (see below), whose sum is σ = 2547466927872. Its totient is φ = 821733060000.

The previous prime is 1540778048419. The next prime is 1540778048489. The reversal of 1540778048475 is 5748408770451.

It is not a de Polignac number, because 1540778048475 - 2⁷ = 1540778048347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4721850 + ... + 5037600.

It is an arithmetic number, because the mean of its divisors is an integer number (106144455328).

Almost surely, 2^{1540778048475} is an apocalyptic number.

1540778048475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1540778048475 is a deficient number, since it is larger than the sum of its proper divisors (1006688879397).

1540778048475 is a wasteful number, since it uses less digits than its factorization.

1540778048475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380827 (or 380822 counting only the distinct ones).

The product of its (nonzero) digits is 35123200, while the sum is 60.

The spelling of 1540778048475 in words is "one trillion, five hundred forty billion, seven hundred seventy-eight million, forty-eight thousand, four hundred seventy-five".