1540212430477 has 16 divisors (see below), whose sum is σ = 1786607698432. Its totient is φ = 1300410437040.

The previous prime is 1540212430459. The next prime is 1540212430487. The reversal of 1540212430477 is 7740342120451.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540212430477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540212430487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10324138 + ... + 10472260.

It is an arithmetic number, because the mean of its divisors is an integer number (111662981152).

Almost surely, 2^{1540212430477} is an apocalyptic number.

It is an amenable number.

1540212430477 is a deficient number, since it is larger than the sum of its proper divisors (246395267955).

1540212430477 is a wasteful number, since it uses less digits than its factorization.

1540212430477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170368.

The product of its (nonzero) digits is 188160, while the sum is 40.

The spelling of 1540212430477 in words is "one trillion, five hundred forty billion, two hundred twelve million, four hundred thirty thousand, four hundred seventy-seven".