3497978820001 has 8 divisors (see below), whose sum is σ = 3540829968360. Its totient is φ = 3455206516608.

The previous prime is 3497978819977. The next prime is 3497978820023. The reversal of 3497978820001 is 1000288797943.

It can be written as a sum of positive squares in 4 ways, for example, as 762345519376 + 2735633300625 = 873124^2 + 1653975^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3497978820001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3497978820031) 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, 19621966 + ... + 19799431.

It is an arithmetic number, because the mean of its divisors is an integer number (442603746045).

Almost surely, 2^{3497978820001} is an apocalyptic number.

It is an amenable number.

3497978820001 is a deficient number, since it is larger than the sum of its proper divisors (42851148359).

3497978820001 is an equidigital number, since it uses as much as digits as its factorization.

3497978820001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39422483.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The spelling of 3497978820001 in words is "three trillion, four hundred ninety-seven billion, nine hundred seventy-eight million, eight hundred twenty thousand, one".