1005516150551 has 18 divisors (see below), whose sum is σ = 1116289414968. Its totient is φ = 905053930000.

The previous prime is 1005516150517. The next prime is 1005516150557. The reversal of 1005516150551 is 1550516155001.

It is not a de Polignac number, because 1005516150551 - 2⁶ = 1005516150487 is a prime.

It is a super-2 number, since 2×1005516150551² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005516150557) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 827006 + ... + 1641636.

Almost surely, 2^{1005516150551} is an apocalyptic number.

1005516150551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1005516150551 is a deficient number, since it is larger than the sum of its proper divisors (110773264417).

1005516150551 is an equidigital number, since it uses as much as digits as its factorization.

1005516150551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814855 (or 814743 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 35.

The spelling of 1005516150551 in words is "one trillion, five billion, five hundred sixteen million, one hundred fifty thousand, five hundred fifty-one".