1276367672720 has 160 divisors (see below), whose sum is σ = 3540205412352. Its totient is φ = 418436384256.

The previous prime is 1276367672653. The next prime is 1276367672761. The reversal of 1276367672720 is 272767636721.

It is a happy number.

It is a super-2 number, since 2×1276367672720² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39692969 + ... + 39725111.

Almost surely, 2^{1276367672720} is an apocalyptic number.

1276367672720 is a gapful number since it is divisible by the number (10) 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 1276367672720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1770102706176).

1276367672720 is an abundant number, since it is smaller than the sum of its proper divisors (2263837739632).

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

1276367672720 is a wasteful number, since it uses less digits than its factorization.

1276367672720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35269 (or 35263 counting only the distinct ones).

The product of its (nonzero) digits is 12446784, while the sum is 56.

The spelling of 1276367672720 in words is "one trillion, two hundred seventy-six billion, three hundred sixty-seven million, six hundred seventy-two thousand, seven hundred twenty".