2157401644371 has 6 divisors (see below), whose sum is σ = 3116246819660. Its totient is φ = 1438267762908.

The previous prime is 2157401644369. The next prime is 2157401644469. The reversal of 2157401644371 is 1734461047512.

2157401644371 is a `hidden beast` number, since 2 + 1 + 57 + 4 + 0 + 164 + 437 + 1 = 666.

It is not a de Polignac number, because 2157401644371 - 2¹ = 2157401644369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157401644471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119855646901 + ... + 119855646918.

Almost surely, 2^{2157401644371} is an apocalyptic number.

2157401644371 is a deficient number, since it is larger than the sum of its proper divisors (958845175289).

2157401644371 is a wasteful number, since it uses less digits than its factorization.

2157401644371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239711293825 (or 239711293822 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 2157401644371 in words is "two trillion, one hundred fifty-seven billion, four hundred one million, six hundred forty-four thousand, three hundred seventy-one".