190916263245978 has 64 divisors (see below), whose sum is σ = 449218399633920. Its totient is φ = 59894809929216.

The previous prime is 190916263245959. The next prime is 190916263245997. The reversal of 190916263245978 is 879542362619091.

190916263245978 is a `hidden beast` number, since 1 + 9 + 0 + 9 + 1 + 6 + 2 + 6 + 3 + 24 + 597 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (190916263245959) and next prime (190916263245997).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121401775 + ... + 122964317.

It is an arithmetic number, because the mean of its divisors is an integer number (7019037494280).

It is a 1-persistent number, because it is pandigital, but 2⋅190916263245978 = 381832526491956 is not.

Almost surely, 2^{190916263245978} is an apocalyptic number.

190916263245978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190916263245978 is an abundant number, since it is smaller than the sum of its proper divisors (258302136387942).

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

190916263245978 is a wasteful number, since it uses less digits than its factorization.

190916263245978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695668 (or 1695662 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 72.

The spelling of 190916263245978 in words is "one hundred ninety trillion, nine hundred sixteen billion, two hundred sixty-three million, two hundred forty-five thousand, nine hundred seventy-eight".