1392043897451 has 2 divisors, whose sum is σ = 1392043897452. Its totient is φ = 1392043897450.

The previous prime is 1392043897423. The next prime is 1392043897469. The reversal of 1392043897451 is 1547983402931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1392043897451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1392043897411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696021948725 + 696021948726.

It is an arithmetic number, because the mean of its divisors is an integer number (696021948726).

Almost surely, 2^{1392043897451} is an apocalyptic number.

1392043897451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392043897451 is an equidigital number, since it uses as much as digits as its factorization.

1392043897451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 1392043897451 in words is "one trillion, three hundred ninety-two billion, forty-three million, eight hundred ninety-seven thousand, four hundred fifty-one".