78355641010 has 16 divisors (see below), whose sum is σ = 141049900800. Its totient is φ = 31340090416.

The previous prime is 78355640989. The next prime is 78355641019. The reversal of 78355641010 is 1014655387.

It is a happy number.

It is a super-2 number, since 2×78355641010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78355641019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114520 + ... + 412099.

It is an arithmetic number, because the mean of its divisors is an integer number (8815618800).

Almost surely, 2^78355641010 is an apocalyptic number.

78355641010 is a deficient number, since it is larger than the sum of its proper divisors (62694259790).

78355641010 is a wasteful number, since it uses less digits than its factorization.

78355641010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541505.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 78355641010 in words is "seventy-eight billion, three hundred fifty-five million, six hundred forty-one thousand, ten".