1067778973972 has 6 divisors (see below), whose sum is σ = 1868613204458. Its totient is φ = 533889486984.

The previous prime is 1067778973957. The next prime is 1067778973997. The reversal of 1067778973972 is 2793798777601.

It can be written as a sum of positive squares in only one way, i.e., 711114412176 + 356664561796 = 843276^2 + 597214^2 .

It is a super-2 number, since 2×1067778973972² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1067778973895 and 1067778973904.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 133472371743 + ... + 133472371750.

Almost surely, 2^{1067778973972} is an apocalyptic number.

It is an amenable number.

1067778973972 is a deficient number, since it is larger than the sum of its proper divisors (800834230486).

1067778973972 is a wasteful number, since it uses less digits than its factorization.

1067778973972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266944743497 (or 266944743495 counting only the distinct ones).

The product of its (nonzero) digits is 392073696, while the sum is 73.

The spelling of 1067778973972 in words is "one trillion, sixty-seven billion, seven hundred seventy-eight million, nine hundred seventy-three thousand, nine hundred seventy-two".