1012456401523 has 4 divisors (see below), whose sum is σ = 1157093030320. Its totient is φ = 867819772728.

The previous prime is 1012456401511. The next prime is 1012456401527. The reversal of 1012456401523 is 3251046542101.

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 1012456401523 - 2⁵ = 1012456401491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012456401527) 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, 72318314388 + ... + 72318314401.

It is an arithmetic number, because the mean of its divisors is an integer number (289273257580).

Almost surely, 2^{1012456401523} is an apocalyptic number.

1012456401523 is a deficient number, since it is larger than the sum of its proper divisors (144636628797).

1012456401523 is an equidigital number, since it uses as much as digits as its factorization.

1012456401523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144636628796.

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 1012456401523 in words is "one trillion, twelve billion, four hundred fifty-six million, four hundred one thousand, five hundred twenty-three".