40129083957601 has 4 divisors (see below), whose sum is σ = 40129149745152. Its totient is φ = 40129018170052.

The previous prime is 40129083957593. The next prime is 40129083957617. The reversal of 40129083957601 is 10675938092104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40129083957601 - 2³ = 40129083957593 is a prime.

It is a super-2 number, since 2×40129083957601² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40129083957661) 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, 31970161 + ... + 33201646.

It is an arithmetic number, because the mean of its divisors is an integer number (10032287436288).

It is a 1-persistent number, because it is pandigital, but 2⋅40129083957601 = 80258167915202 is not.

Almost surely, 2^{40129083957601} is an apocalyptic number.

It is an amenable number.

40129083957601 is a deficient number, since it is larger than the sum of its proper divisors (65787551).

40129083957601 is an equidigital number, since it uses as much as digits as its factorization.

40129083957601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65787550.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 40129083957601 in words is "forty trillion, one hundred twenty-nine billion, eighty-three million, nine hundred fifty-seven thousand, six hundred one".