99205051240 has 16 divisors (see below), whose sum is σ = 223211365380. Its totient is φ = 39682020480.

The previous prime is 99205051219. The next prime is 99205051243. The reversal of 99205051240 is 4215050299.

It can be written as a sum of positive squares in 2 ways, for example, as 98629914916 + 575136324 = 314054^2 + 23982^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99205051240.

It is not an unprimeable number, because it can be changed into a prime (99205051243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240063101 + ... + 1240063180.

Almost surely, 2^99205051240 is an apocalyptic number.

It is an amenable number.

99205051240 is an abundant number, since it is smaller than the sum of its proper divisors (124006314140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99205051240 is a wasteful number, since it uses less digits than its factorization.

99205051240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480126292 (or 2480126288 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

It can be divided in two parts, 992050 and 51240, that added together give a triangular number (1043290 = T₁₄₄₄).

The spelling of 99205051240 in words is "ninety-nine billion, two hundred five million, fifty-one thousand, two hundred forty".