77000378000 has 640 divisors, whose sum is σ = 248960065536. Its totient is φ = 22339584000.

The previous prime is 77000377997. The next prime is 77000378009. The reversal of 77000378000 is 87300077.

It is not an unprimeable number, because it can be changed into a prime (77000378009) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 126853697 + ... + 126854303.

Almost surely, 2^77000378000 is an apocalyptic number.

77000378000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77000378000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124480032768).

77000378000 is an abundant number, since it is smaller than the sum of its proper divisors (171959687536).

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

77000378000 is a wasteful number, since it uses less digits than its factorization.

77000378000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 32.

Adding to 77000378000 its reverse (87300077), we get a palindrome (77087678077).

The spelling of 77000378000 in words is "seventy-seven billion, three hundred seventy-eight thousand".