1005551520151 has 4 divisors (see below), whose sum is σ = 1005564309904. Its totient is φ = 1005538730400.

The previous prime is 1005551520101. The next prime is 1005551520167. The reversal of 1005551520151 is 1510251555001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1005551520151 - 2¹³ = 1005551511959 is a prime.

It is a super-2 number, since 2×1005551520151² (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 (1005551520101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6276210 + ... + 6434431.

It is an arithmetic number, because the mean of its divisors is an integer number (251391077476).

Almost surely, 2^{1005551520151} is an apocalyptic number.

1005551520151 is a deficient number, since it is larger than the sum of its proper divisors (12789753).

1005551520151 is an equidigital number, since it uses as much as digits as its factorization.

1005551520151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12789752.

The product of its (nonzero) digits is 6250, while the sum is 31.

The spelling of 1005551520151 in words is "one trillion, five billion, five hundred fifty-one million, five hundred twenty thousand, one hundred fifty-one".