2156501305526 has 4 divisors (see below), whose sum is σ = 3234751958292. Its totient is φ = 1078250652762.

The previous prime is 2156501305501. The next prime is 2156501305549. The reversal of 2156501305526 is 6255031056512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539125326380 + ... + 539125326383.

It is an arithmetic number, because the mean of its divisors is an integer number (808687989573).

Almost surely, 2^{2156501305526} is an apocalyptic number.

2156501305526 is a deficient number, since it is larger than the sum of its proper divisors (1078250652766).

2156501305526 is a wasteful number, since it uses less digits than its factorization.

2156501305526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078250652765.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 2156501305526 in words is "two trillion, one hundred fifty-six billion, five hundred one million, three hundred five thousand, five hundred twenty-six".