800322503778 has 126 divisors (see below), whose sum is σ = 2094389600571. Its totient is φ = 228595253544.

The previous prime is 800322503767. The next prime is 800322503789. The reversal of 800322503778 is 877305223008.

It is an interprime number because it is at equal distance from previous prime (800322503767) and next prime (800322503789).

It can be written as a sum of positive squares in only one way, i.e., 400161251889 + 400161251889 = 632583^2 + 632583^2 .

It is a tau number, because it is divible by the number of its divisors (126).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=632583.

It is a super-2 number, since 2×800322503778² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 239114701 + ... + 239118047.

Almost surely, 2^800322503778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 800322503778

800322503778 is an abundant number, since it is smaller than the sum of its proper divisors (1294067096793).

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

800322503778 is an frugal number, since it uses more digits than its factorization.

800322503778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6728 (or 3359 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 800322503778 in words is "eight hundred billion, three hundred twenty-two million, five hundred three thousand, seven hundred seventy-eight".