104654513001661 has 12 divisors (see below), whose sum is σ = 121943528138460. Its totient is φ = 89554610577600.

The previous prime is 104654513001611. The next prime is 104654513001697. The reversal of 104654513001661 is 166100315456401.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 88894160856900 + 15760352144761 = 9428370^2 + 3969931^2 .

It is not a de Polignac number, because 104654513001661 - 2¹⁹ = 104654512477373 is a prime.

It is a super-2 number, since 2×104654513001661² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104654513001611) 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, 1776847746 + ... + 1776906643.

It is an arithmetic number, because the mean of its divisors is an integer number (10161960678205).

Almost surely, 2^{104654513001661} is an apocalyptic number.

It is an amenable number.

104654513001661 is a deficient number, since it is larger than the sum of its proper divisors (17289015136799).

104654513001661 is an equidigital number, since it uses as much as digits as its factorization.

104654513001661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553755004 (or 3553754997 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 104654513001661 in words is "one hundred four trillion, six hundred fifty-four billion, five hundred thirteen million, one thousand, six hundred sixty-one".