617777783340 has 48 divisors (see below), whose sum is σ = 1754140872960. Its totient is φ = 162420448960.

The previous prime is 617777783297. The next prime is 617777783341. The reversal of 617777783340 is 43387777716.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (617777783341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72504870 + ... + 72513389.

It is an arithmetic number, because the mean of its divisors is an integer number (36544601520).

Almost surely, 2^617777783340 is an apocalyptic number.

617777783340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

617777783340 is an abundant number, since it is smaller than the sum of its proper divisors (1136363089620).

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

617777783340 is a wasteful number, since it uses less digits than its factorization.

617777783340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145018342 (or 145018340 counting only the distinct ones).

The product of its (nonzero) digits is 29042496, while the sum is 60.

The spelling of 617777783340 in words is "six hundred seventeen billion, seven hundred seventy-seven million, seven hundred eighty-three thousand, three hundred forty".