77016251510320 has 40 divisors (see below), whose sum is σ = 179247195637200. Its totient is φ = 30774774001920.

The previous prime is 77016251510311. The next prime is 77016251510323. The reversal of 77016251510320 is 2301515261077.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (77016251510323) 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, 495649995 + ... + 495805354.

It is an arithmetic number, because the mean of its divisors is an integer number (4481179890930).

Almost surely, 2^{77016251510320} is an apocalyptic number.

It is an amenable number.

77016251510320 is an abundant number, since it is smaller than the sum of its proper divisors (102230944126880).

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

77016251510320 is a wasteful number, since it uses less digits than its factorization.

77016251510320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991456333 (or 991456327 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

Adding to 77016251510320 its reverse (2301515261077), we get a palindrome (79317766771397).

The spelling of 77016251510320 in words is "seventy-seven trillion, sixteen billion, two hundred fifty-one million, five hundred ten thousand, three hundred twenty".