56371587469 has 2 divisors, whose sum is σ = 56371587470. Its totient is φ = 56371587468.

The previous prime is 56371587413. The next prime is 56371587479. The reversal of 56371587469 is 96478517365.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51091821225 + 5279766244 = 226035^2 + 72662^2 .

It is a cyclic number.

It is not a de Polignac number, because 56371587469 - 2⁷ = 56371587341 is a prime.

It is a super-2 number, since 2×56371587469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56371587479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28185793734 + 28185793735.

It is an arithmetic number, because the mean of its divisors is an integer number (28185793735).

Almost surely, 2^56371587469 is an apocalyptic number.

It is an amenable number.

56371587469 is a deficient number, since it is larger than the sum of its proper divisors (1).

56371587469 is an equidigital number, since it uses as much as digits as its factorization.

56371587469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38102400, while the sum is 61.

The spelling of 56371587469 in words is "fifty-six billion, three hundred seventy-one million, five hundred eighty-seven thousand, four hundred sixty-nine".