15457027889 has 2 divisors, whose sum is σ = 15457027890. Its totient is φ = 15457027888.

The previous prime is 15457027867. The next prime is 15457027933. The reversal of 15457027889 is 98872075451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9997000225 + 5460027664 = 99985^2 + 73892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15457027889 is a prime.

It is a super-2 number, since 2×15457027889² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15457023889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7728513944 + 7728513945.

It is an arithmetic number, because the mean of its divisors is an integer number (7728513945).

Almost surely, 2^15457027889 is an apocalyptic number.

It is an amenable number.

15457027889 is a deficient number, since it is larger than the sum of its proper divisors (1).

15457027889 is an equidigital number, since it uses as much as digits as its factorization.

15457027889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5644800, while the sum is 56.

The spelling of 15457027889 in words is "fifteen billion, four hundred fifty-seven million, twenty-seven thousand, eight hundred eighty-nine".