1274550026640 has 80 divisors (see below), whose sum is σ = 4310296462656. Its totient is φ = 308981824000.

The previous prime is 1274550026569. The next prime is 1274550026647. The reversal of 1274550026640 is 466200554721.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1274550026592 and 1274550026601.

It is not an unprimeable number, because it can be changed into a prime (1274550026647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241389411 + ... + 241394690.

Almost surely, 2^{1274550026640} is an apocalyptic number.

1274550026640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274550026640 is an abundant number, since it is smaller than the sum of its proper divisors (3035746436016).

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

1274550026640 is a wasteful number, since it uses less digits than its factorization.

1274550026640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482784128 (or 482784122 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 1274550026640 in words is "one trillion, two hundred seventy-four billion, five hundred fifty million, twenty-six thousand, six hundred forty".