20126261770277 has 24 divisors (see below), whose sum is σ = 21954154775040. Its totient is φ = 18441177605760.

The previous prime is 20126261770259. The next prime is 20126261770297. The reversal of 20126261770277 is 77207716262102.

It is not a de Polignac number, because 20126261770277 - 2²⁶ = 20126194661413 is a prime.

It is a super-4 number, since 4×20126261770277⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126261770297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 511175402 + ... + 511214772.

It is an arithmetic number, because the mean of its divisors is an integer number (914756448960).

Almost surely, 2^{20126261770277} is an apocalyptic number.

It is an amenable number.

20126261770277 is a deficient number, since it is larger than the sum of its proper divisors (1827893004763).

20126261770277 is a wasteful number, since it uses less digits than its factorization.

20126261770277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61613 (or 61600 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 50.

The spelling of 20126261770277 in words is "twenty trillion, one hundred twenty-six billion, two hundred sixty-one million, seven hundred seventy thousand, two hundred seventy-seven".