1275220561048 has 32 divisors (see below), whose sum is σ = 2741345926560. Its totient is φ = 544777009920.

The previous prime is 1275220561019. The next prime is 1275220561063. The reversal of 1275220561048 is 8401650225721.

It is a junction number, because it is equal to n+sod(n) for n = 1275220560995 and 1275220561013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36359143 + ... + 36394198.

It is an arithmetic number, because the mean of its divisors is an integer number (85667060205).

Almost surely, 2^{1275220561048} is an apocalyptic number.

It is an amenable number.

1275220561048 is an abundant number, since it is smaller than the sum of its proper divisors (1466125365512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275220561048 is a wasteful number, since it uses less digits than its factorization.

1275220561048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72753667 (or 72753663 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

Adding to 1275220561048 its reverse (8401650225721), we get a palindrome (9676870786769).

The spelling of 1275220561048 in words is "one trillion, two hundred seventy-five billion, two hundred twenty million, five hundred sixty-one thousand, forty-eight".