37046212421 has 2 divisors, whose sum is σ = 37046212422. Its totient is φ = 37046212420.

The previous prime is 37046212397. The next prime is 37046212433. The reversal of 37046212421 is 12421264073.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36271202500 + 775009921 = 190450^2 + 27839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37046212421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37046212471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18523106210 + 18523106211.

It is an arithmetic number, because the mean of its divisors is an integer number (18523106211).

Almost surely, 2^37046212421 is an apocalyptic number.

It is an amenable number.

37046212421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37046212421 is an equidigital number, since it uses as much as digits as its factorization.

37046212421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 37046212421 its reverse (12421264073), we get a palindrome (49467476494).

The spelling of 37046212421 in words is "thirty-seven billion, forty-six million, two hundred twelve thousand, four hundred twenty-one".