99522723781 has 8 divisors (see below), whose sum is σ = 111838245120. Its totient is φ = 87872906352.

The previous prime is 99522723719. The next prime is 99522723799. The reversal of 99522723781 is 18732722599.

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 99522723781 - 2¹⁷ = 99522592709 is a prime.

It is a super-2 number, since 2×99522723781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99522723701) 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, 166425661 + ... + 166426258.

It is an arithmetic number, because the mean of its divisors is an integer number (13979780640).

Almost surely, 2^99522723781 is an apocalyptic number.

It is an amenable number.

99522723781 is a deficient number, since it is larger than the sum of its proper divisors (12315521339).

99522723781 is a wasteful number, since it uses less digits than its factorization.

99522723781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332851955.

The product of its digits is 3810240, while the sum is 55.

The spelling of 99522723781 in words is "ninety-nine billion, five hundred twenty-two million, seven hundred twenty-three thousand, seven hundred eighty-one".