40420541200957 has 2 divisors, whose sum is σ = 40420541200958. Its totient is φ = 40420541200956.

The previous prime is 40420541200951. The next prime is 40420541200961. The reversal of 40420541200957 is 75900214502404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30122468699236 + 10298072501721 = 5488394^2 + 3209061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40420541200957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40420541200951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20210270600478 + 20210270600479.

It is an arithmetic number, because the mean of its divisors is an integer number (20210270600479).

Almost surely, 2^{40420541200957} is an apocalyptic number.

It is an amenable number.

40420541200957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40420541200957 is an equidigital number, since it uses as much as digits as its factorization.

40420541200957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 40420541200957 in words is "forty trillion, four hundred twenty billion, five hundred forty-one million, two hundred thousand, nine hundred fifty-seven".