1156098128465 has 64 divisors (see below), whose sum is σ = 1648441638912. Its totient is φ = 761663865600.

The previous prime is 1156098128453. The next prime is 1156098128477. The reversal of 1156098128465 is 5648218906511.

It is an interprime number because it is at equal distance from previous prime (1156098128453) and next prime (1156098128477).

It is not a de Polignac number, because 1156098128465 - 2¹² = 1156098124369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1156098128465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198605255 + ... + 198611075.

It is an arithmetic number, because the mean of its divisors is an integer number (25756900608).

Almost surely, 2^{1156098128465} is an apocalyptic number.

It is an amenable number.

1156098128465 is a deficient number, since it is larger than the sum of its proper divisors (492343510447).

1156098128465 is a wasteful number, since it uses less digits than its factorization.

1156098128465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150.

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 1156098128465 in words is "one trillion, one hundred fifty-six billion, ninety-eight million, one hundred twenty-eight thousand, four hundred sixty-five".