40251042651 has 32 divisors (see below), whose sum is σ = 57432038400. Its totient is φ = 25001533440.

The previous prime is 40251042649. The next prime is 40251042653. The reversal of 40251042651 is 15624015204.

It is an interprime number because it is at equal distance from previous prime (40251042649) and next prime (40251042653).

It is not a de Polignac number, because 40251042651 - 2¹ = 40251042649 is a prime.

It is a super-2 number, since 2×40251042651² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40251042653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1139881 + ... + 1174661.

It is an arithmetic number, because the mean of its divisors is an integer number (1794751200).

Almost surely, 2^40251042651 is an apocalyptic number.

40251042651 is a deficient number, since it is larger than the sum of its proper divisors (17180995749).

40251042651 is a wasteful number, since it uses less digits than its factorization.

40251042651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35139.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 40251042651 its reverse (15624015204), we get a palindrome (55875057855).

The spelling of 40251042651 in words is "forty billion, two hundred fifty-one million, forty-two thousand, six hundred fifty-one".