2197971044541 has 64 divisors (see below), whose sum is σ = 3372878361600. Its totient is φ = 1413747131328.

The previous prime is 2197971044527. The next prime is 2197971044617. The reversal of 2197971044541 is 1454401797912.

2197971044541 is a `hidden beast` number, since 2 + 1 + 9 + 7 + 97 + 1 + 0 + 4 + 4 + 541 = 666.

It is not a de Polignac number, because 2197971044541 - 2⁵ = 2197971044509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197971044141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43081275 + ... + 43132263.

It is an arithmetic number, because the mean of its divisors is an integer number (52701224400).

Almost surely, 2^{2197971044541} is an apocalyptic number.

It is an amenable number.

2197971044541 is a deficient number, since it is larger than the sum of its proper divisors (1174907317059).

2197971044541 is a wasteful number, since it uses less digits than its factorization.

2197971044541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51495 (or 51489 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 2197971044541 in words is "two trillion, one hundred ninety-seven billion, nine hundred seventy-one million, forty-four thousand, five hundred forty-one".