2129554677950 has 36 divisors (see below), whose sum is σ = 4607660963592. Its totient is φ = 730133031600.

The previous prime is 2129554677923. The next prime is 2129554678003. The reversal of 2129554677950 is 597764559212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 434600546 + ... + 434605445.

It is an arithmetic number, because the mean of its divisors is an integer number (127990582322).

Almost surely, 2^{2129554677950} is an apocalyptic number.

2129554677950 is an abundant number, since it is smaller than the sum of its proper divisors (2478106285642).

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

2129554677950 is a wasteful number, since it uses less digits than its factorization.

2129554677950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869206017 (or 869206005 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 62.

The spelling of 2129554677950 in words is "two trillion, one hundred twenty-nine billion, five hundred fifty-four million, six hundred seventy-seven thousand, nine hundred fifty".