1551541362163 has 4 divisors (see below), whose sum is σ = 1670890697728. Its totient is φ = 1432192026600.

The previous prime is 1551541362103. The next prime is 1551541362179. The reversal of 1551541362163 is 3612631451551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1551541362163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551541362103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59674667763 + ... + 59674667788.

It is an arithmetic number, because the mean of its divisors is an integer number (417722674432).

Almost surely, 2^{1551541362163} is an apocalyptic number.

1551541362163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1551541362163 is a deficient number, since it is larger than the sum of its proper divisors (119349335565).

1551541362163 is a wasteful number, since it uses less digits than its factorization.

1551541362163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119349335564.

The product of its digits is 324000, while the sum is 43.

The spelling of 1551541362163 in words is "one trillion, five hundred fifty-one billion, five hundred forty-one million, three hundred sixty-two thousand, one hundred sixty-three".