2154236326215 has 24 divisors (see below), whose sum is σ = 3661456351440. Its totient is φ = 1081342153728.

The previous prime is 2154236326201. The next prime is 2154236326243. The reversal of 2154236326215 is 5126236324512.

It is not a de Polignac number, because 2154236326215 - 2⁴ = 2154236326199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248465830 + ... + 248474499.

It is an arithmetic number, because the mean of its divisors is an integer number (152560681310).

Almost surely, 2^{2154236326215} is an apocalyptic number.

2154236326215 is a deficient number, since it is larger than the sum of its proper divisors (1507220025225).

2154236326215 is a wasteful number, since it uses less digits than its factorization.

2154236326215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496940371 (or 496940354 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 2154236326215 in words is "two trillion, one hundred fifty-four billion, two hundred thirty-six million, three hundred twenty-six thousand, two hundred fifteen".