2155663460451 has 8 divisors (see below), whose sum is σ = 2874229309440. Its totient is φ = 1437103292552.

The previous prime is 2155663460437. The next prime is 2155663460519. The reversal of 2155663460451 is 1540643665512.

It is a happy number.

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 2155663460451 - 2²⁵ = 2155629906019 is a prime.

It is a super-2 number, since 2×2155663460451² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2155663460451.

It is not an unprimeable number, because it can be changed into a prime (2155663460351) 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, 437811 + ... + 2122028.

It is an arithmetic number, because the mean of its divisors is an integer number (359278663680).

Almost surely, 2^{2155663460451} is an apocalyptic number.

2155663460451 is a deficient number, since it is larger than the sum of its proper divisors (718565848989).

2155663460451 is a wasteful number, since it uses less digits than its factorization.

2155663460451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840545.

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 2155663460451 in words is "two trillion, one hundred fifty-five billion, six hundred sixty-three million, four hundred sixty thousand, four hundred fifty-one".