7837278680 has 64 divisors (see below), whose sum is σ = 21985102080. Its totient is φ = 2442787200.

The previous prime is 7837278667. The next prime is 7837278689. The reversal of 7837278680 is 868727387.

It is a super-2 number, since 2×7837278680² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7837278689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1269206 + ... + 1275365.

It is an arithmetic number, because the mean of its divisors is an integer number (343517220).

Almost surely, 2^7837278680 is an apocalyptic number.

7837278680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7837278680 is an abundant number, since it is smaller than the sum of its proper divisors (14147823400).

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

7837278680 is a wasteful number, since it uses less digits than its factorization.

7837278680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544600 (or 2544596 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 56.

The square root of 7837278680 is about 88528.4060626870. The cubic root of 7837278680 is about 1986.3468984960.

The spelling of 7837278680 in words is "seven billion, eight hundred thirty-seven million, two hundred seventy-eight thousand, six hundred eighty".