1011401531551 has 2 divisors, whose sum is σ = 1011401531552. Its totient is φ = 1011401531550.

The previous prime is 1011401531519. The next prime is 1011401531557. The reversal of 1011401531551 is 1551351041101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011401531551 - 2⁵ = 1011401531519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011401531557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505700765775 + 505700765776.

It is an arithmetic number, because the mean of its divisors is an integer number (505700765776).

Almost surely, 2^{1011401531551} is an apocalyptic number.

1011401531551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011401531551 is an equidigital number, since it uses as much as digits as its factorization.

1011401531551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 28.

Adding to 1011401531551 its reverse (1551351041101), we get a palindrome (2562752572652).

The spelling of 1011401531551 in words is "one trillion, eleven billion, four hundred one million, five hundred thirty-one thousand, five hundred fifty-one".