372773215421 has 2 divisors, whose sum is σ = 372773215422. Its totient is φ = 372773215420.

The previous prime is 372773215343. The next prime is 372773215471. The reversal of 372773215421 is 124512377273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 342764582521 + 30008632900 = 585461^2 + 173230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-372773215421 is a prime.

It is a super-2 number, since 2×372773215421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372773215471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186386607710 + 186386607711.

It is an arithmetic number, because the mean of its divisors is an integer number (186386607711).

Almost surely, 2^372773215421 is an apocalyptic number.

It is an amenable number.

372773215421 is a deficient number, since it is larger than the sum of its proper divisors (1).

372773215421 is an equidigital number, since it uses as much as digits as its factorization.

372773215421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

The spelling of 372773215421 in words is "three hundred seventy-two billion, seven hundred seventy-three million, two hundred fifteen thousand, four hundred twenty-one".