1029978677634 has 32 divisors (see below), whose sum is σ = 2168511687360. Its totient is φ = 325236096000.

The previous prime is 1029978677633. The next prime is 1029978677671. The reversal of 1029978677634 is 4367768799201.

It is not an unprimeable number, because it can be changed into a prime (1029978677633) 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, 1604734 + ... + 2152934.

It is an arithmetic number, because the mean of its divisors is an integer number (67765990230).

Almost surely, 2^{1029978677634} is an apocalyptic number.

1029978677634 is an abundant number, since it is smaller than the sum of its proper divisors (1138533009726).

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

1029978677634 is a wasteful number, since it uses less digits than its factorization.

1029978677634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564706.

The product of its (nonzero) digits is 192036096, while the sum is 69.

The spelling of 1029978677634 in words is "one trillion, twenty-nine billion, nine hundred seventy-eight million, six hundred seventy-seven thousand, six hundred thirty-four".