1040140351251 has 8 divisors (see below), whose sum is σ = 1540948668560. Its totient is φ = 693426900816.

The previous prime is 1040140351193. The next prime is 1040140351307. The reversal of 1040140351251 is 1521530410401.

1040140351251 is a `hidden beast` number, since 1 + 0 + 4 + 0 + 1 + 403 + 5 + 1 + 251 = 666.

1040140351251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1040140351251 - 2⁷ = 1040140351123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 38523716713 = 1040140351251 / (1 + 0 + 4 + 0 + 1 + 4 + 0 + 3 + 5 + 1 + 2 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040140351651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19261858330 + ... + 19261858383.

It is an arithmetic number, because the mean of its divisors is an integer number (192618583570).

Almost surely, 2^{1040140351251} is an apocalyptic number.

1040140351251 is a deficient number, since it is larger than the sum of its proper divisors (500808317309).

1040140351251 is an equidigital number, since it uses as much as digits as its factorization.

1040140351251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38523716722 (or 38523716716 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 1040140351251 its reverse (1521530410401), we get a palindrome (2561670761652).

The spelling of 1040140351251 in words is "one trillion, forty billion, one hundred forty million, three hundred fifty-one thousand, two hundred fifty-one".