1271903322516 has 24 divisors (see below), whose sum is σ = 3063509078784. Its totient is φ = 410291394240.

The previous prime is 1271903322439. The next prime is 1271903322553. The reversal of 1271903322516 is 6152233091721.

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, 1709547105 + ... + 1709547848.

It is an arithmetic number, because the mean of its divisors is an integer number (127646211616).

Almost surely, 2^{1271903322516} is an apocalyptic number.

It is an amenable number.

1271903322516 is an abundant number, since it is smaller than the sum of its proper divisors (1791605756268).

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

1271903322516 is a wasteful number, since it uses less digits than its factorization.

1271903322516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419094991 (or 3419094989 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 1271903322516 in words is "one trillion, two hundred seventy-one billion, nine hundred three million, three hundred twenty-two thousand, five hundred sixteen".