1542574740645 has 24 divisors (see below), whose sum is σ = 2675290932600. Its totient is φ = 822246615936.

The previous prime is 1542574740631. The next prime is 1542574740649. The reversal of 1542574740645 is 5460474752451.

1542574740645 is a `hidden beast` number, since 1 + 5 + 4 + 2 + 574 + 7 + 4 + 0 + 64 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 132613233921 + 1409961506724 = 364161^2 + 1187418^2 .

It is not a de Polignac number, because 1542574740645 - 2¹⁷ = 1542574609573 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1542574740591 and 1542574740600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542574740649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9500110 + ... + 9661119.

It is an arithmetic number, because the mean of its divisors is an integer number (111470455525).

Almost surely, 2^{1542574740645} is an apocalyptic number.

1542574740645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1542574740645 is a deficient number, since it is larger than the sum of its proper divisors (1132716191955).

1542574740645 is a wasteful number, since it uses less digits than its factorization.

1542574740645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163029 (or 19163026 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 54.

The spelling of 1542574740645 in words is "one trillion, five hundred forty-two billion, five hundred seventy-four million, seven hundred forty thousand, six hundred forty-five".