105281687730 has 16 divisors (see below), whose sum is σ = 252676050624. Its totient is φ = 28075116720.

The previous prime is 105281687729. The next prime is 105281687747. The reversal of 105281687730 is 37786182501.

It is a happy number.

It is a super-2 number, since 2×105281687730² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105281687730.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754694766 + ... + 1754694825.

It is an arithmetic number, because the mean of its divisors is an integer number (15792253164).

Almost surely, 2^105281687730 is an apocalyptic number.

105281687730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105281687730 is an abundant number, since it is smaller than the sum of its proper divisors (147394362894).

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

105281687730 is a wasteful number, since it uses less digits than its factorization.

105281687730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509389601.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 105281687730 in words is "one hundred five billion, two hundred eighty-one million, six hundred eighty-seven thousand, seven hundred thirty".