1361264531403 has 32 divisors (see below), whose sum is σ = 2082306769920. Its totient is φ = 774867502080.

The previous prime is 1361264531399. The next prime is 1361264531423. The reversal of 1361264531403 is 3041354621631.

It is not a de Polignac number, because 1361264531403 - 2² = 1361264531399 is a prime.

It is a super-2 number, since 2×1361264531403² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1361264531423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20969251 + ... + 21034067.

It is an arithmetic number, because the mean of its divisors is an integer number (65072086560).

Almost surely, 2^{1361264531403} is an apocalyptic number.

1361264531403 is a deficient number, since it is larger than the sum of its proper divisors (721042238517).

1361264531403 is a wasteful number, since it uses less digits than its factorization.

1361264531403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68667.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 1361264531403 in words is "one trillion, three hundred sixty-one billion, two hundred sixty-four million, five hundred thirty-one thousand, four hundred three".