1061637550478 has 4 divisors (see below), whose sum is σ = 1592456325720. Its totient is φ = 530818775238.

The previous prime is 1061637550459. The next prime is 1061637550499. The reversal of 1061637550478 is 8740557361601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1061637550478² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265409387618 + ... + 265409387621.

It is an arithmetic number, because the mean of its divisors is an integer number (398114081430).

Almost surely, 2^{1061637550478} is an apocalyptic number.

1061637550478 is a deficient number, since it is larger than the sum of its proper divisors (530818775242).

1061637550478 is an equidigital number, since it uses as much as digits as its factorization.

1061637550478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530818775241.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 1061637550478 in words is "one trillion, sixty-one billion, six hundred thirty-seven million, five hundred fifty thousand, four hundred seventy-eight".