7961873840 has 160 divisors (see below), whose sum is σ = 20405551104. Its totient is φ = 2875944960.

The previous prime is 7961873831. The next prime is 7961873869. The reversal of 7961873840 is 483781697.

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, 5353577 + ... + 5355063.

Almost surely, 2^7961873840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7961873840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10202775552).

7961873840 is an abundant number, since it is smaller than the sum of its proper divisors (12443677264).

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

7961873840 is a wasteful number, since it uses less digits than its factorization.

7961873840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 7961873840 is about 89229.3328452029. The cubic root of 7961873840 is about 1996.8177593577.

The spelling of 7961873840 in words is "seven billion, nine hundred sixty-one million, eight hundred seventy-three thousand, eight hundred forty".