77750150221 has 8 divisors (see below), whose sum is σ = 78189963488. Its totient is φ = 77310450000.

The previous prime is 77750150209. The next prime is 77750150273. The reversal of 77750150221 is 12205105777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77750150221 - 2⁹ = 77750149709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77750151221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621846 + ... + 1669096.

It is an arithmetic number, because the mean of its divisors is an integer number (9773745436).

Almost surely, 2^77750150221 is an apocalyptic number.

It is an amenable number.

77750150221 is a deficient number, since it is larger than the sum of its proper divisors (439813267).

77750150221 is a wasteful number, since it uses less digits than its factorization.

77750150221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56523.

The product of its (nonzero) digits is 34300, while the sum is 37.

Adding to 77750150221 its reverse (12205105777), we get a palindrome (89955255998).

The spelling of 77750150221 in words is "seventy-seven billion, seven hundred fifty million, one hundred fifty thousand, two hundred twenty-one".