1277898448416 has 48 divisors (see below), whose sum is σ = 3401729690688. Its totient is φ = 419966624000.

The previous prime is 1277898448397. The next prime is 1277898448423. The reversal of 1277898448416 is 6148448987721.

It is a tau number, because it is divible by the number of its divisors (48).

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, 93735735 + ... + 93749366.

It is an arithmetic number, because the mean of its divisors is an integer number (70869368556).

Almost surely, 2^{1277898448416} is an apocalyptic number.

1277898448416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1277898448416 is an abundant number, since it is smaller than the sum of its proper divisors (2123831242272).

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

1277898448416 is a wasteful number, since it uses less digits than its factorization.

1277898448416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187485185 (or 187485177 counting only the distinct ones).

The product of its digits is 173408256, while the sum is 69.

The spelling of 1277898448416 in words is "one trillion, two hundred seventy-seven billion, eight hundred ninety-eight million, four hundred forty-eight thousand, four hundred sixteen".