1540220882087 has 4 divisors (see below), whose sum is σ = 1552348605696. Its totient is φ = 1528093158480.

The previous prime is 1540220882063. The next prime is 1540220882099. The reversal of 1540220882087 is 7802880220451.

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

It is a cyclic number.

It is not a de Polignac number, because 1540220882087 - 2¹² = 1540220877991 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 (1540220887087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6063861614 + ... + 6063861867.

It is an arithmetic number, because the mean of its divisors is an integer number (388087151424).

Almost surely, 2^{1540220882087} is an apocalyptic number.

1540220882087 is a deficient number, since it is larger than the sum of its proper divisors (12127723609).

1540220882087 is a wasteful number, since it uses less digits than its factorization.

1540220882087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12127723608.

The product of its (nonzero) digits is 573440, while the sum is 47.

The spelling of 1540220882087 in words is "one trillion, five hundred forty billion, two hundred twenty million, eight hundred eighty-two thousand, eighty-seven".