77002420000 has 240 divisors, whose sum is σ = 209198560032. Its totient is φ = 27656960000.

The previous prime is 77002419971. The next prime is 77002420037. The reversal of 77002420000 is 2420077.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18257892 + ... + 18262108.

Almost surely, 2^77002420000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77002420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104599280016).

77002420000 is an abundant number, since it is smaller than the sum of its proper divisors (132196140032).

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

77002420000 is a wasteful number, since it uses less digits than its factorization.

77002420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

Adding to 77002420000 its reverse (2420077), we get a palindrome (77004840077).

The spelling of 77002420000 in words is "seventy-seven billion, two million, four hundred twenty thousand".