1641611903652 has 144 divisors (see below), whose sum is σ = 5211466680000. Its totient is φ = 444346051968.

The previous prime is 1641611903651. The next prime is 1641611903653. The reversal of 1641611903652 is 2563091161461.

1641611903652 is a `hidden beast` number, since 1 + 6 + 41 + 61 + 190 + 365 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1641611903651) and next prime (1641611903653).

It is a junction number, because it is equal to n+sod(n) for n = 1641611903598 and 1641611903607.

It is not an unprimeable number, because it can be changed into a prime (1641611903651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8062777 + ... + 8263872.

Almost surely, 2^{1641611903652} is an apocalyptic number.

1641611903652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641611903652 is an abundant number, since it is smaller than the sum of its proper divisors (3569854776348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641611903652 is a wasteful number, since it uses less digits than its factorization.

1641611903652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16326695 (or 16326680 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 1641611903652 in words is "one trillion, six hundred forty-one billion, six hundred eleven million, nine hundred three thousand, six hundred fifty-two".