1641611436004 has 6 divisors (see below), whose sum is σ = 2872820013014. Its totient is φ = 820805718000.

The previous prime is 1641611435983. The next prime is 1641611436041. The reversal of 1641611436004 is 4006341161461.

It can be written as a sum of positive squares in only one way, i.e., 1610112285604 + 31499150400 = 1268902^2 + 177480^2 .

It is a super-2 number, since 2×1641611436004² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205201429497 + ... + 205201429504.

Almost surely, 2^{1641611436004} is an apocalyptic number.

It is an amenable number.

1641611436004 is a deficient number, since it is larger than the sum of its proper divisors (1231208577010).

1641611436004 is a wasteful number, since it uses less digits than its factorization.

1641611436004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410402859005 (or 410402859003 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 1641611436004 its reverse (4006341161461), we get a palindrome (5647952597465).

The spelling of 1641611436004 in words is "one trillion, six hundred forty-one billion, six hundred eleven million, four hundred thirty-six thousand, four".