2391660684101 has 8 divisors (see below), whose sum is σ = 2576270755800. Its totient is φ = 2207141494272.

The previous prime is 2391660684089. The next prime is 2391660684121. The reversal of 2391660684101 is 1014860661932.

It can be written as a sum of positive squares in 4 ways, for example, as 334656465025 + 2057004219076 = 578495^2 + 1434226^2 .

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

It is not a de Polignac number, because 2391660684101 - 2²⁶ = 2391593575237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391660684121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22665800 + ... + 22771073.

It is an arithmetic number, because the mean of its divisors is an integer number (322033844475).

Almost surely, 2^{2391660684101} is an apocalyptic number.

It is an amenable number.

2391660684101 is a deficient number, since it is larger than the sum of its proper divisors (184610071699).

2391660684101 is a wasteful number, since it uses less digits than its factorization.

2391660684101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45440935.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 2391660684101 in words is "two trillion, three hundred ninety-one billion, six hundred sixty million, six hundred eighty-four thousand, one hundred one".