19760220780 has 192 divisors, whose sum is σ = 59012997120. Its totient is φ = 4926355200.

The previous prime is 19760220769. The next prime is 19760220791. The reversal of 19760220780 is 8702206791.

It is an interprime number because it is at equal distance from previous prime (19760220769) and next prime (19760220791).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45847165 + ... + 45847595.

It is an arithmetic number, because the mean of its divisors is an integer number (307359360).

Almost surely, 2^19760220780 is an apocalyptic number.

19760220780 is a gapful number since it is divisible by the number (10) 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 19760220780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29506498560).

19760220780 is an abundant number, since it is smaller than the sum of its proper divisors (39252776340).

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

19760220780 is a wasteful number, since it uses less digits than its factorization.

19760220780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 19760220780 in words is "nineteen billion, seven hundred sixty million, two hundred twenty thousand, seven hundred eighty".