1520720612106 has 16 divisors (see below), whose sum is σ = 3046622562144. Its totient is φ = 506043314384.

The previous prime is 1520720612093. The next prime is 1520720612119. The reversal of 1520720612106 is 6012160270251.

It is an interprime number because it is at equal distance from previous prime (1520720612093) and next prime (1520720612119).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215885265 + ... + 215892308.

It is an arithmetic number, because the mean of its divisors is an integer number (190413910134).

Almost surely, 2^{1520720612106} is an apocalyptic number.

1520720612106 is an abundant number, since it is smaller than the sum of its proper divisors (1525901950038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1520720612106 is a wasteful number, since it uses less digits than its factorization.

1520720612106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431778165.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 1520720612106 its reverse (6012160270251), we get a palindrome (7532880882357).

The spelling of 1520720612106 in words is "one trillion, five hundred twenty billion, seven hundred twenty million, six hundred twelve thousand, one hundred six".