10101001040 has 40 divisors (see below), whose sum is σ = 25291355208.
Its totient is φ = 3729600000.
The previous prime is 10101001037. The next prime is 10101001123. The reversal of 10101001040 is 4010010101.
It can be written as a sum of positive squares in 4 ways, for example, as 1947633424 + 8153367616 = 44132^2 + 90296^2
It is a tau number, because it is divible by the number of its divisors (40).
It is a Harshad number since it is a multiple of its sum of digits (8).
It is a congruent number.
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, 4855211 + ... + 4857290.
Almost surely, 210101001040 is an apocalyptic number.
10101001040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
10101001040 is an abundant number, since it is smaller than the sum of its proper divisors (15190354168).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
10101001040 is a wasteful number, since it uses less digits than its factorization.
10101001040 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9712527 (or 9712521 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 8.
Adding to 10101001040 its reverse (4010010101), we get a palindrome (14111011141).
The spelling of 10101001040 in words is "ten billion, one hundred one million, one thousand, forty".