1016611551005 has 8 divisors (see below), whose sum is σ = 1252905046872. Its totient is φ = 791308450368.

The previous prime is 1016611550987. The next prime is 1016611551017. The reversal of 1016611551005 is 5001551166101.

It can be written as a sum of positive squares in 4 ways, for example, as 75482617081 + 941128933924 = 274741^2 + 970118^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1016611551005 - 2¹⁴ = 1016611534621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2747598602 + ... + 2747598971.

It is an arithmetic number, because the mean of its divisors is an integer number (156613130859).

Almost surely, 2^{1016611551005} is an apocalyptic number.

It is an amenable number.

1016611551005 is a deficient number, since it is larger than the sum of its proper divisors (236293495867).

1016611551005 is an equidigital number, since it uses as much as digits as its factorization.

1016611551005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495197615.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 1016611551005 in words is "one trillion, sixteen billion, six hundred eleven million, five hundred fifty-one thousand, five".