2154674036971 has 4 divisors (see below), whose sum is σ = 2155966584552. Its totient is φ = 2153381489392.

The previous prime is 2154674036969. The next prime is 2154674036981. The reversal of 2154674036971 is 1796304764512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2154674036971 - 2¹ = 2154674036969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154674036981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646271290 + ... + 646274623.

It is an arithmetic number, because the mean of its divisors is an integer number (538991646138).

Almost surely, 2^{2154674036971} is an apocalyptic number.

2154674036971 is a deficient number, since it is larger than the sum of its proper divisors (1292547581).

2154674036971 is a wasteful number, since it uses less digits than its factorization.

2154674036971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292547580.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 2154674036971 in words is "two trillion, one hundred fifty-four billion, six hundred seventy-four million, thirty-six thousand, nine hundred seventy-one".