1156311280587 has 8 divisors (see below), whose sum is σ = 1561264176640. Its totient is φ = 761116285800.

The previous prime is 1156311280577. The next prime is 1156311280609. The reversal of 1156311280587 is 7850821136511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1156311280587 - 2⁷ = 1156311280459 is a prime.

It is a super-2 number, since 2×1156311280587² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156311280567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2439475039 + ... + 2439475512.

It is an arithmetic number, because the mean of its divisors is an integer number (195158022080).

Almost surely, 2^{1156311280587} is an apocalyptic number.

1156311280587 is a deficient number, since it is larger than the sum of its proper divisors (404952896053).

1156311280587 is an equidigital number, since it uses as much as digits as its factorization.

1156311280587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4878950633.

The product of its (nonzero) digits is 403200, while the sum is 48.

The spelling of 1156311280587 in words is "one trillion, one hundred fifty-six billion, three hundred eleven million, two hundred eighty thousand, five hundred eighty-seven".