126020591778 has 8 divisors (see below), whose sum is σ = 252041183568. Its totient is φ = 42006863924.

The previous prime is 126020591777. The next prime is 126020591803. The reversal of 126020591778 is 877195020621.

It is a sphenic number, since it is the product of 3 distinct primes.

126020591778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (126020591777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10501715976 + ... + 10501715987.

It is an arithmetic number, because the mean of its divisors is an integer number (31505147946).

Almost surely, 2^126020591778 is an apocalyptic number.

126020591778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126020591778 is a wasteful number, since it uses less digits than its factorization.

126020591778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21003431968.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 126020591778 in words is "one hundred twenty-six billion, twenty million, five hundred ninety-one thousand, seven hundred seventy-eight".