863220742461 has 48 divisors (see below), whose sum is σ = 1645988542848. Its totient is φ = 422048332800.

The previous prime is 863220742453. The next prime is 863220742603. The reversal of 863220742461 is 164247022368.

It is a happy number.

863220742461 is a `hidden beast` number, since 8 + 632 + 2 + 0 + 7 + 4 + 2 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 863220742461 - 2³ = 863220742453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863220742411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36624360 + ... + 36647921.

It is an arithmetic number, because the mean of its divisors is an integer number (34291427976).

Almost surely, 2^863220742461 is an apocalyptic number.

It is an amenable number.

863220742461 is a deficient number, since it is larger than the sum of its proper divisors (782767800387).

863220742461 is a wasteful number, since it uses less digits than its factorization.

863220742461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73272322 (or 73272319 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 863220742461 in words is "eight hundred sixty-three billion, two hundred twenty million, seven hundred forty-two thousand, four hundred sixty-one".