1026235640261 has 16 divisors (see below), whose sum is σ = 1163423701440. Its totient is φ = 897375386880.

The previous prime is 1026235640257. The next prime is 1026235640291. The reversal of 1026235640261 is 1620465326201.

It is not a de Polignac number, because 1026235640261 - 2² = 1026235640257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026235640291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3679901 + ... + 3948941.

It is an arithmetic number, because the mean of its divisors is an integer number (72713981340).

Almost surely, 2^{1026235640261} is an apocalyptic number.

It is an amenable number.

1026235640261 is a deficient number, since it is larger than the sum of its proper divisors (137188061179).

1026235640261 is a wasteful number, since it uses less digits than its factorization.

1026235640261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284516.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 1026235640261 in words is "one trillion, twenty-six billion, two hundred thirty-five million, six hundred forty thousand, two hundred sixty-one".