371405512421 has 2 divisors, whose sum is σ = 371405512422. Its totient is φ = 371405512420.

The previous prime is 371405512409. The next prime is 371405512427. The reversal of 371405512421 is 124215504173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344604220900 + 26801291521 = 587030^2 + 163711^2 .

It is an emirp because it is prime and its reverse (124215504173) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 371405512421 - 2²² = 371401318117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (371405512427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185702756210 + 185702756211.

It is an arithmetic number, because the mean of its divisors is an integer number (185702756211).

Almost surely, 2^371405512421 is an apocalyptic number.

It is an amenable number.

371405512421 is a deficient number, since it is larger than the sum of its proper divisors (1).

371405512421 is an equidigital number, since it uses as much as digits as its factorization.

371405512421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 371405512421 in words is "three hundred seventy-one billion, four hundred five million, five hundred twelve thousand, four hundred twenty-one".