1551532426451 has 32 divisors (see below), whose sum is σ = 1833620447232. Its totient is φ = 1285056938880.

The previous prime is 1551532426447. The next prime is 1551532426523. The reversal of 1551532426451 is 1546242351551.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1551532426451 - 2² = 1551532426447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1551532476451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92174606 + ... + 92191436.

It is an arithmetic number, because the mean of its divisors is an integer number (57300638976).

Almost surely, 2^{1551532426451} is an apocalyptic number.

1551532426451 is a deficient number, since it is larger than the sum of its proper divisors (282088020781).

1551532426451 is a wasteful number, since it uses less digits than its factorization.

1551532426451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19299.

The product of its digits is 720000, while the sum is 44.

The spelling of 1551532426451 in words is "one trillion, five hundred fifty-one billion, five hundred thirty-two million, four hundred twenty-six thousand, four hundred fifty-one".