1552967734397 has 2 divisors, whose sum is σ = 1552967734398. Its totient is φ = 1552967734396.

The previous prime is 1552967734393. The next prime is 1552967734403. The reversal of 1552967734397 is 7934377692551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1552967084761 + 649636 = 1246181^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1552967734397 - 2² = 1552967734393 is a prime.

It is a super-2 number, since 2×1552967734397² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552967734393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776483867198 + 776483867199.

It is an arithmetic number, because the mean of its divisors is an integer number (776483867199).

Almost surely, 2^{1552967734397} is an apocalyptic number.

It is an amenable number.

1552967734397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552967734397 is an equidigital number, since it uses as much as digits as its factorization.

1552967734397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300056400, while the sum is 68.

The spelling of 1552967734397 in words is "one trillion, five hundred fifty-two billion, nine hundred sixty-seven million, seven hundred thirty-four thousand, three hundred ninety-seven".