2155435401503 has 4 divisors (see below), whose sum is σ = 2156900688768. Its totient is φ = 2153970114240.

The previous prime is 2155435401467. The next prime is 2155435401593. The reversal of 2155435401503 is 3051045345512.

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 2155435401503 - 2³⁶ = 2086715924767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155435401593) 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, 732641426 + ... + 732644367.

It is an arithmetic number, because the mean of its divisors is an integer number (539225172192).

Almost surely, 2^{2155435401503} is an apocalyptic number.

2155435401503 is a deficient number, since it is larger than the sum of its proper divisors (1465287265).

2155435401503 is a wasteful number, since it uses less digits than its factorization.

2155435401503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465287264.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 2155435401503 in words is "two trillion, one hundred fifty-five billion, four hundred thirty-five million, four hundred one thousand, five hundred three".