126783431286 has 64 divisors (see below), whose sum is σ = 263473330176. Its totient is φ = 40628966400.

The previous prime is 126783431263. The next prime is 126783431321. The reversal of 126783431286 is 682134387621.

It is a happy number.

It is a super-2 number, since 2×126783431286² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18183781 + ... + 18190751.

It is an arithmetic number, because the mean of its divisors is an integer number (4116770784).

Almost surely, 2^126783431286 is an apocalyptic number.

126783431286 is an abundant number, since it is smaller than the sum of its proper divisors (136689898890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126783431286 is a wasteful number, since it uses less digits than its factorization.

126783431286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7637.

The product of its digits is 2322432, while the sum is 51.

The spelling of 126783431286 in words is "one hundred twenty-six billion, seven hundred eighty-three million, four hundred thirty-one thousand, two hundred eighty-six".