1342620631551 has 16 divisors (see below), whose sum is σ = 1795443978240. Its totient is φ = 892440440640.

The previous prime is 1342620631529. The next prime is 1342620631559. The reversal of 1342620631551 is 1551360262431.

It is a happy number.

It is not a de Polignac number, because 1342620631551 - 2⁶ = 1342620631487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342620631559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3214596 + ... + 3608166.

It is an arithmetic number, because the mean of its divisors is an integer number (112215248640).

Almost surely, 2^{1342620631551} is an apocalyptic number.

1342620631551 is a deficient number, since it is larger than the sum of its proper divisors (452823346689).

1342620631551 is a wasteful number, since it uses less digits than its factorization.

1342620631551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396926.

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 1342620631551 its reverse (1551360262431), we get a palindrome (2893980893982).

The spelling of 1342620631551 in words is "one trillion, three hundred forty-two billion, six hundred twenty million, six hundred thirty-one thousand, five hundred fifty-one".