1630554550361 has 12 divisors (see below), whose sum is σ = 1803678144996. Its totient is φ = 1472880757920.

The previous prime is 1630554550357. The next prime is 1630554550363.

It is a happy number.

1630554550361 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 762059161600 + 868495388761 = 872960^2 + 931931^2 .

It is not a de Polignac number, because 1630554550361 - 2² = 1630554550357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1630554550363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42897110 + ... + 42935103.

It is an arithmetic number, because the mean of its divisors is an integer number (150306512083).

Almost surely, 2^{1630554550361} is an apocalyptic number.

1630554550361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1630554550361 is a deficient number, since it is larger than the sum of its proper divisors (173123594635).

1630554550361 is a wasteful number, since it uses less digits than its factorization.

1630554550361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85832392 (or 85832381 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 1630554550361 in words is "one trillion, six hundred thirty billion, five hundred fifty-four million, five hundred fifty thousand, three hundred sixty-one".