99215539730 has 8 divisors (see below), whose sum is σ = 178587971532. Its totient is φ = 39686215888.

The previous prime is 99215539727. The next prime is 99215539771. The reversal of 99215539730 is 3793551299.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 98176315561 + 1039224169 = 313331^2 + 32237^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4960776977 + ... + 4960776996.

Almost surely, 2^99215539730 is an apocalyptic number.

99215539730 is a deficient number, since it is larger than the sum of its proper divisors (79372431802).

99215539730 is a wasteful number, since it uses less digits than its factorization.

99215539730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9921553980.

The product of its (nonzero) digits is 2296350, while the sum is 53.

The spelling of 99215539730 in words is "ninety-nine billion, two hundred fifteen million, five hundred thirty-nine thousand, seven hundred thirty".