77216412561340 has 96 divisors (see below), whose sum is σ = 174930437283840. Its totient is φ = 28461308795136.

The previous prime is 77216412561259. The next prime is 77216412561347. The reversal of 77216412561340 is 4316521461277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77216412561347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 516205399 + ... + 516354961.

It is an arithmetic number, because the mean of its divisors is an integer number (1822192055040).

Almost surely, 2^{77216412561340} is an apocalyptic number.

It is an amenable number.

77216412561340 is an abundant number, since it is smaller than the sum of its proper divisors (97714024722500).

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

77216412561340 is a wasteful number, since it uses less digits than its factorization.

77216412561340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153011 (or 153009 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 77216412561340 in words is "seventy-seven trillion, two hundred sixteen billion, four hundred twelve million, five hundred sixty-one thousand, three hundred forty".