1420305777640 has 64 divisors (see below), whose sum is σ = 3202550654400. Its totient is φ = 566903597568.

The previous prime is 1420305777629. The next prime is 1420305777731. The reversal of 1420305777640 is 467775030241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36269191 + ... + 36308329.

It is an arithmetic number, because the mean of its divisors is an integer number (50039853975).

Almost surely, 2^{1420305777640} is an apocalyptic number.

1420305777640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420305777640 is an abundant number, since it is smaller than the sum of its proper divisors (1782244876760).

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

1420305777640 is a wasteful number, since it uses less digits than its factorization.

1420305777640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41074 (or 41070 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 1420305777640 in words is "one trillion, four hundred twenty billion, three hundred five million, seven hundred seventy-seven thousand, six hundred forty".