1520351164542 has 64 divisors (see below), whose sum is σ = 3532064016384. Its totient is φ = 427282875360.

The previous prime is 1520351164487. The next prime is 1520351164567. The reversal of 1520351164542 is 2454611530251.

It is a super-2 number, since 2×1520351164542² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1520351164542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1553533 + ... + 2335415.

It is an arithmetic number, because the mean of its divisors is an integer number (55188500256).

Almost surely, 2^{1520351164542} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520351164542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1766032008192).

1520351164542 is an abundant number, since it is smaller than the sum of its proper divisors (2011712851842).

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

1520351164542 is a wasteful number, since it uses less digits than its factorization.

1520351164542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782653.

The product of its (nonzero) digits is 144000, while the sum is 39.

Adding to 1520351164542 its reverse (2454611530251), we get a palindrome (3974962694793).

The spelling of 1520351164542 in words is "one trillion, five hundred twenty billion, three hundred fifty-one million, one hundred sixty-four thousand, five hundred forty-two".