99701780572 has 12 divisors (see below), whose sum is σ = 174480435976. Its totient is φ = 49850227440.

The previous prime is 99701780569. The next prime is 99701780587. The reversal of 99701780572 is 27508710799.

It is a congruent 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, 353422 + ... + 569482.

Almost surely, 2^99701780572 is an apocalyptic number.

It is an amenable number.

99701780572 is a deficient number, since it is larger than the sum of its proper divisors (74778655404).

99701780572 is a wasteful number, since it uses less digits than its factorization.

99701780572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331428 (or 331426 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 55.

The spelling of 99701780572 in words is "ninety-nine billion, seven hundred one million, seven hundred eighty thousand, five hundred seventy-two".