1076638774638 has 32 divisors (see below), whose sum is σ = 2567883787776. Its totient is φ = 294236683488.

The previous prime is 1076638774633. The next prime is 1076638774639. The reversal of 1076638774638 is 8364778366701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1076638774633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557265481 + ... + 557267412.

It is an arithmetic number, because the mean of its divisors is an integer number (80246368368).

Almost surely, 2^{1076638774638} is an apocalyptic number.

1076638774638 is an abundant number, since it is smaller than the sum of its proper divisors (1491245013138).

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

1076638774638 is a wasteful number, since it uses less digits than its factorization.

1076638774638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114532928.

The product of its (nonzero) digits is 170698752, while the sum is 66.

The spelling of 1076638774638 in words is "one trillion, seventy-six billion, six hundred thirty-eight million, seven hundred seventy-four thousand, six hundred thirty-eight".