37770121633 has 2 divisors, whose sum is σ = 37770121634. Its totient is φ = 37770121632.

The previous prime is 37770121619. The next prime is 37770121667. The reversal of 37770121633 is 33612107773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25265738304 + 12504383329 = 158952^2 + 111823^2 .

It is a cyclic number.

It is not a de Polignac number, because 37770121633 - 2³³ = 29180187041 is a prime.

It is a super-2 number, since 2×37770121633² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37770121673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18885060816 + 18885060817.

It is an arithmetic number, because the mean of its divisors is an integer number (18885060817).

Almost surely, 2^37770121633 is an apocalyptic number.

It is an amenable number.

37770121633 is a deficient number, since it is larger than the sum of its proper divisors (1).

37770121633 is an equidigital number, since it uses as much as digits as its factorization.

37770121633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 40.

The spelling of 37770121633 in words is "thirty-seven billion, seven hundred seventy million, one hundred twenty-one thousand, six hundred thirty-three".