2154693153847 has 8 divisors (see below), whose sum is σ = 2327324360816. Its totient is φ = 1983045601152.

The previous prime is 2154693153797. The next prime is 2154693153871. The reversal of 2154693153847 is 7483513964512.

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

It is a cyclic number.

It is not a de Polignac number, because 2154693153847 - 2¹¹ = 2154693151799 is a prime.

It is a super-2 number, since 2×2154693153847² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2154693153791 and 2154693153800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154693159847) 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, 245909013 + ... + 245917774.

It is an arithmetic number, because the mean of its divisors is an integer number (290915545102).

Almost surely, 2^{2154693153847} is an apocalyptic number.

2154693153847 is a deficient number, since it is larger than the sum of its proper divisors (172631206969).

2154693153847 is a wasteful number, since it uses less digits than its factorization.

2154693153847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491827137.

The product of its digits is 21772800, while the sum is 58.

The spelling of 2154693153847 in words is "two trillion, one hundred fifty-four billion, six hundred ninety-three million, one hundred fifty-three thousand, eight hundred forty-seven".