1641264162501 has 16 divisors (see below), whose sum is σ = 2190948963840. Its totient is φ = 1092878244720.

The previous prime is 1641264162493. The next prime is 1641264162509. The reversal of 1641264162501 is 1052614621461.

It is an interprime number because it is at equal distance from previous prime (1641264162493) and next prime (1641264162509).

It is not a de Polignac number, because 1641264162501 - 2³ = 1641264162493 is a prime.

It is a super-2 number, since 2×1641264162501² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1641264162501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641264162509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13367770 + ... + 13489988.

It is an arithmetic number, because the mean of its divisors is an integer number (136934310240).

Almost surely, 2^{1641264162501} is an apocalyptic number.

It is an amenable number.

1641264162501 is a deficient number, since it is larger than the sum of its proper divisors (549684801339).

1641264162501 is a wasteful number, since it uses less digits than its factorization.

1641264162501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127496.

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 1641264162501 its reverse (1052614621461), we get a palindrome (2693878783962).

The spelling of 1641264162501 in words is "one trillion, six hundred forty-one billion, two hundred sixty-four million, one hundred sixty-two thousand, five hundred one".