1261016646483 has 16 divisors (see below), whose sum is σ = 1835799662592. Its totient is φ = 763588500000.

The previous prime is 1261016646467. The next prime is 1261016646499. The reversal of 1261016646483 is 3846466101621.

It is an interprime number because it is at equal distance from previous prime (1261016646467) and next prime (1261016646499).

It is not a de Polignac number, because 1261016646483 - 2⁴ = 1261016646467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1261016646433) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16561768 + ... + 16637733.

It is an arithmetic number, because the mean of its divisors is an integer number (114737478912).

Almost surely, 2^{1261016646483} is an apocalyptic number.

1261016646483 is a deficient number, since it is larger than the sum of its proper divisors (574783016109).

1261016646483 is a wasteful number, since it uses less digits than its factorization.

1261016646483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33200666.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 1261016646483 in words is "one trillion, two hundred sixty-one billion, sixteen million, six hundred forty-six thousand, four hundred eighty-three".