1023515234455 has 32 divisors (see below), whose sum is σ = 1420016025600. Its totient is φ = 693716849280.

The previous prime is 1023515234437. The next prime is 1023515234471. The reversal of 1023515234455 is 5544325153201.

It is not a de Polignac number, because 1023515234455 - 2³⁷ = 886076280983 is a prime.

It is a super-2 number, since 2×1023515234455² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 561946 + ... + 1537144.

It is an arithmetic number, because the mean of its divisors is an integer number (44375500800).

Almost surely, 2^{1023515234455} is an apocalyptic number.

1023515234455 is a deficient number, since it is larger than the sum of its proper divisors (396500791145).

1023515234455 is a wasteful number, since it uses less digits than its factorization.

1023515234455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975559.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 1023515234455 in words is "one trillion, twenty-three billion, five hundred fifteen million, two hundred thirty-four thousand, four hundred fifty-five".