1002119854778 has 32 divisors (see below), whose sum is σ = 1729523136000. Its totient is φ = 426587258160.

The previous prime is 1002119854759. The next prime is 1002119854781. The reversal of 1002119854778 is 8774589112001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134125 + ... + 1813967.

It is an arithmetic number, because the mean of its divisors is an integer number (54047598000).

Almost surely, 2^{1002119854778} is an apocalyptic number.

1002119854778 is a deficient number, since it is larger than the sum of its proper divisors (727403281222).

1002119854778 is a wasteful number, since it uses less digits than its factorization.

1002119854778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680562.

The product of its (nonzero) digits is 1128960, while the sum is 53.

The spelling of 1002119854778 in words is "one trillion, two billion, one hundred nineteen million, eight hundred fifty-four thousand, seven hundred seventy-eight".