2154540553451 has 32 divisors (see below), whose sum is σ = 2668490915328. Its totient is φ = 1711568010240.

The previous prime is 2154540553433. The next prime is 2154540553457. The reversal of 2154540553451 is 1543550454512.

It is a happy number.

It is not a de Polignac number, because 2154540553451 - 2¹⁰ = 2154540552427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2154540553457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3057641 + ... + 3695706.

It is an arithmetic number, because the mean of its divisors is an integer number (83390341104).

Almost surely, 2^{2154540553451} is an apocalyptic number.

2154540553451 is a deficient number, since it is larger than the sum of its proper divisors (513950361877).

2154540553451 is a wasteful number, since it uses less digits than its factorization.

2154540553451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6753491.

The product of its (nonzero) digits is 1200000, while the sum is 44.

The spelling of 2154540553451 in words is "two trillion, one hundred fifty-four billion, five hundred forty million, five hundred fifty-three thousand, four hundred fifty-one".