1351634045561 has 8 divisors (see below), whose sum is σ = 1431169424640. Its totient is φ = 1272101721408.

The previous prime is 1351634045551. The next prime is 1351634045581. The reversal of 1351634045561 is 1655404361531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1351634045561 - 2⁶ = 1351634045497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351634045501) 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 in 7 ways as a sum of consecutive naturals, for example, 180560 + ... + 1654046.

It is an arithmetic number, because the mean of its divisors is an integer number (178896178080).

Almost surely, 2^{1351634045561} is an apocalyptic number.

It is an amenable number.

1351634045561 is a deficient number, since it is larger than the sum of its proper divisors (79535379079).

1351634045561 is a wasteful number, since it uses less digits than its factorization.

1351634045561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527463.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 1351634045561 in words is "one trillion, three hundred fifty-one billion, six hundred thirty-four million, forty-five thousand, five hundred sixty-one".