1641013750645 has 8 divisors (see below), whose sum is σ = 1982432719800. Its totient is φ = 1304000187840.

The previous prime is 1641013750633. The next prime is 1641013750657. The reversal of 1641013750645 is 5460573101461.

It is an interprime number because it is at equal distance from previous prime (1641013750633) and next prime (1641013750657).

It can be written as a sum of positive squares in 4 ways, for example, as 238963567921 + 1402050182724 = 488839^2 + 1184082^2 .

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

It is not a de Polignac number, because 1641013750645 - 2⁵ = 1641013750613 is a prime.

It is a super-2 number, since 2×1641013750645² (a number of 25 digits) contains 22 as substring.

It is a congruent 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, 1101350766 + ... + 1101352255.

It is an arithmetic number, because the mean of its divisors is an integer number (247804089975).

Almost surely, 2^{1641013750645} is an apocalyptic number.

It is an amenable number.

1641013750645 is a deficient number, since it is larger than the sum of its proper divisors (341418969155).

1641013750645 is a wasteful number, since it uses less digits than its factorization.

1641013750645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202703175.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 1641013750645 in words is "one trillion, six hundred forty-one billion, thirteen million, seven hundred fifty thousand, six hundred forty-five".