2156013520526 has 4 divisors (see below), whose sum is σ = 3234020280792. Its totient is φ = 1078006760262.

The previous prime is 2156013520499. The next prime is 2156013520589. The reversal of 2156013520526 is 6250253106512.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2156013520526.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539003380130 + ... + 539003380133.

It is an arithmetic number, because the mean of its divisors is an integer number (808505070198).

Almost surely, 2^{2156013520526} is an apocalyptic number.

2156013520526 is a deficient number, since it is larger than the sum of its proper divisors (1078006760266).

2156013520526 is a wasteful number, since it uses less digits than its factorization.

2156013520526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078006760265.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 2156013520526 in words is "two trillion, one hundred fifty-six billion, thirteen million, five hundred twenty thousand, five hundred twenty-six".