1026684501645 has 16 divisors (see below), whose sum is σ = 1792031130432. Its totient is φ = 497786424960.

The previous prime is 1026684501641. The next prime is 1026684501659. The reversal of 1026684501645 is 5461054866201.

It is not a de Polignac number, because 1026684501645 - 2² = 1026684501641 is a prime.

It is a super-4 number, since 4×1026684501645⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a junction number, because it is equal to n+sod(n) for n = 1026684501594 and 1026684501603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026684501641) 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, 3111164992 + ... + 3111165321.

It is an arithmetic number, because the mean of its divisors is an integer number (112001945652).

Almost surely, 2^{1026684501645} is an apocalyptic number.

1026684501645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1026684501645 is a deficient number, since it is larger than the sum of its proper divisors (765346628787).

1026684501645 is a wasteful number, since it uses less digits than its factorization.

1026684501645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222330332.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 1026684501645 in words is "one trillion, twenty-six billion, six hundred eighty-four million, five hundred one thousand, six hundred forty-five".