126285978401 has 8 divisors (see below), whose sum is σ = 140024990208. Its totient is φ = 112923378000.

The previous prime is 126285978367. The next prime is 126285978407. The reversal of 126285978401 is 104879582621.

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

It is a cyclic number.

It is not a de Polignac number, because 126285978401 - 2¹⁸ = 126285716257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126285978407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94102145 + ... + 94103486.

It is an arithmetic number, because the mean of its divisors is an integer number (17503123776).

Almost surely, 2^126285978401 is an apocalyptic number.

126285978401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126285978401 is a deficient number, since it is larger than the sum of its proper divisors (13739011807).

126285978401 is a wasteful number, since it uses less digits than its factorization.

126285978401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188205703.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The spelling of 126285978401 in words is "one hundred twenty-six billion, two hundred eighty-five million, nine hundred seventy-eight thousand, four hundred one".