40157420747 has 2 divisors, whose sum is σ = 40157420748. Its totient is φ = 40157420746.

The previous prime is 40157420651. The next prime is 40157420749. The reversal of 40157420747 is 74702475104.

40157420747 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40157420747 is a prime.

It is a super-2 number, since 2×40157420747² (a number of 22 digits) contains 22 as substring.

Together with 40157420749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40157420749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078710373 + 20078710374.

It is an arithmetic number, because the mean of its divisors is an integer number (20078710374).

Almost surely, 2^40157420747 is an apocalyptic number.

40157420747 is a deficient number, since it is larger than the sum of its proper divisors (1).

40157420747 is an equidigital number, since it uses as much as digits as its factorization.

40157420747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219520, while the sum is 41.

The spelling of 40157420747 in words is "forty billion, one hundred fifty-seven million, four hundred twenty thousand, seven hundred forty-seven".