1551567740345 has 8 divisors (see below), whose sum is σ = 2127864329664. Its totient is φ = 1063932164784.

The previous prime is 1551567740321. The next prime is 1551567740351. The reversal of 1551567740345 is 5430477651551.

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

It is a cyclic number.

It is not a de Polignac number, because 1551567740345 - 2⁸ = 1551567740089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22165253399 + ... + 22165253468.

It is an arithmetic number, because the mean of its divisors is an integer number (265983041208).

Almost surely, 2^{1551567740345} is an apocalyptic number.

It is an amenable number.

1551567740345 is a deficient number, since it is larger than the sum of its proper divisors (576296589319).

1551567740345 is an equidigital number, since it uses as much as digits as its factorization.

1551567740345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44330506879.

The product of its (nonzero) digits is 8820000, while the sum is 53.

The spelling of 1551567740345 in words is "one trillion, five hundred fifty-one billion, five hundred sixty-seven million, seven hundred forty thousand, three hundred forty-five".