1215522451054 has 16 divisors (see below), whose sum is σ = 1865720659968. Its totient is φ = 593616095352.

The previous prime is 1215522451007. The next prime is 1215522451061. The reversal of 1215522451054 is 4501542255121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6244669 + ... + 6436375.

It is an arithmetic number, because the mean of its divisors is an integer number (116607541248).

Almost surely, 2^{1215522451054} is an apocalyptic number.

1215522451054 is a deficient number, since it is larger than the sum of its proper divisors (650198208914).

1215522451054 is a wasteful number, since it uses less digits than its factorization.

1215522451054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265479.

The product of its (nonzero) digits is 80000, while the sum is 37.

The spelling of 1215522451054 in words is "one trillion, two hundred fifteen billion, five hundred twenty-two million, four hundred fifty-one thousand, fifty-four".