1273253769216 has 1040 divisors, whose sum is σ = 4571606527488. Its totient is φ = 347966668800.

The previous prime is 1273253769173. The next prime is 1273253769241. The reversal of 1273253769216 is 6129673523721.

1273253769216 is a `hidden beast` number, since 1 + 2 + 7 + 3 + 2 + 537 + 6 + 92 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2229866211 + ... + 2229866781.

Almost surely, 2^{1273253769216} is an apocalyptic number.

1273253769216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273253769216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2285803263744).

1273253769216 is an abundant number, since it is smaller than the sum of its proper divisors (3298352758272).

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

1273253769216 is a wasteful number, since it uses less digits than its factorization.

1273253769216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 647 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 1273253769216 in words is "one trillion, two hundred seventy-three billion, two hundred fifty-three million, seven hundred sixty-nine thousand, two hundred sixteen".