40651001381 has 8 divisors (see below), whose sum is σ = 42637969920. Its totient is φ = 38710785168.

The previous prime is 40651001371. The next prime is 40651001387. The reversal of 40651001381 is 18310015604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40651001381 - 2³⁴ = 23471132197 is a prime.

It is a super-2 number, since 2×40651001381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40651001387) 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, 11686301 + ... + 11689778.

It is an arithmetic number, because the mean of its divisors is an integer number (5329746240).

Almost surely, 2^40651001381 is an apocalyptic number.

It is an amenable number.

40651001381 is a deficient number, since it is larger than the sum of its proper divisors (1986968539).

40651001381 is a wasteful number, since it uses less digits than its factorization.

40651001381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23376163.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 40651001381 its reverse (18310015604), we get a palindrome (58961016985).

The spelling of 40651001381 in words is "forty billion, six hundred fifty-one million, one thousand, three hundred eighty-one".