2156100263434 has 32 divisors (see below), whose sum is σ = 3603169095120. Its totient is φ = 960772119552.

The previous prime is 2156100263407. The next prime is 2156100263459. The reversal of 2156100263434 is 4343620016512.

It can be written as a sum of positive squares in 8 ways, for example, as 225259398225 + 1930840865209 = 474615^2 + 1389547^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2156100263393 and 2156100263402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33817474 + ... + 33881170.

Almost surely, 2^{2156100263434} is an apocalyptic number.

2156100263434 is a deficient number, since it is larger than the sum of its proper divisors (1447068831686).

2156100263434 is a wasteful number, since it uses less digits than its factorization.

2156100263434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108634.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 2156100263434 its reverse (4343620016512), we get a palindrome (6499720279946).

The spelling of 2156100263434 in words is "two trillion, one hundred fifty-six billion, one hundred million, two hundred sixty-three thousand, four hundred thirty-four".