126753687890 has 8 divisors (see below), whose sum is σ = 228156638220. Its totient is φ = 50701475152.

The previous prime is 126753687833. The next prime is 126753687899. The reversal of 126753687890 is 98786357621.

It can be written as a sum of positive squares in 2 ways, for example, as 110981593321 + 15772094569 = 333139^2 + 125587^2 .

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

It is not an unprimeable number, because it can be changed into a prime (126753687899) 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, 6337684385 + ... + 6337684404.

Almost surely, 2^126753687890 is an apocalyptic number.

126753687890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126753687890 is a deficient number, since it is larger than the sum of its proper divisors (101402950330).

126753687890 is a wasteful number, since it uses less digits than its factorization.

126753687890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12675368796.

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 126753687890 in words is "one hundred twenty-six billion, seven hundred fifty-three million, six hundred eighty-seven thousand, eight hundred ninety".