1263452131528 has 16 divisors (see below), whose sum is σ = 2369266021260. Its totient is φ = 631647859200.

The previous prime is 1263452131519. The next prime is 1263452131537. The reversal of 1263452131528 is 8251312543621.

It is an interprime number because it is at equal distance from previous prime (1263452131519) and next prime (1263452131537).

It can be written as a sum of positive squares in 2 ways, for example, as 1127805768324 + 135646363204 = 1061982^2 + 368302^2 .

It is a super-2 number, since 2×1263452131528² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9707133 + ... + 9836428.

Almost surely, 2^{1263452131528} is an apocalyptic number.

It is an amenable number.

1263452131528 is a deficient number, since it is larger than the sum of its proper divisors (1105813889732).

1263452131528 is a wasteful number, since it uses less digits than its factorization.

1263452131528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19551648 (or 19551644 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The spelling of 1263452131528 in words is "one trillion, two hundred sixty-three billion, four hundred fifty-two million, one hundred thirty-one thousand, five hundred twenty-eight".