1023452040511 has 4 divisors (see below), whose sum is σ = 1077317937400. Its totient is φ = 969586143624.

The previous prime is 1023452040493. The next prime is 1023452040547. The reversal of 1023452040511 is 1150402543201.

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 1023452040511 - 2⁹ = 1023452039999 is a prime.

It is a super-2 number, since 2×1023452040511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023452040511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023452040571) 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, 26932948416 + ... + 26932948453.

It is an arithmetic number, because the mean of its divisors is an integer number (269329484350).

Almost surely, 2^{1023452040511} is an apocalyptic number.

1023452040511 is a deficient number, since it is larger than the sum of its proper divisors (53865896889).

1023452040511 is an equidigital number, since it uses as much as digits as its factorization.

1023452040511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53865896888.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 1023452040511 its reverse (1150402543201), we get a palindrome (2173854583712).

The spelling of 1023452040511 in words is "one trillion, twenty-three billion, four hundred fifty-two million, forty thousand, five hundred eleven".