126781770580 has 48 divisors (see below), whose sum is σ = 273505115520. Its totient is φ = 49329883008.

The previous prime is 126781770517. The next prime is 126781770613. The reversal of 126781770580 is 85077187621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3328081 + ... + 3365959.

It is an arithmetic number, because the mean of its divisors is an integer number (5698023240).

Almost surely, 2^126781770580 is an apocalyptic number.

126781770580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126781770580 is an abundant number, since it is smaller than the sum of its proper divisors (146723344940).

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

126781770580 is a wasteful number, since it uses less digits than its factorization.

126781770580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42448 (or 42446 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 126781770580 in words is "one hundred twenty-six billion, seven hundred eighty-one million, seven hundred seventy thousand, five hundred eighty".