40722187574437 has 2 divisors, whose sum is σ = 40722187574438. Its totient is φ = 40722187574436.

The previous prime is 40722187574417. The next prime is 40722187574513. The reversal of 40722187574437 is 73447578122704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37840226376481 + 2881961197956 = 6151441^2 + 1697634^2 .

It is a cyclic number.

It is not a de Polignac number, because 40722187574437 - 2⁴³ = 31926094552229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40722187574407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20361093787218 + 20361093787219.

It is an arithmetic number, because the mean of its divisors is an integer number (20361093787219).

Almost surely, 2^{40722187574437} is an apocalyptic number.

It is an amenable number.

40722187574437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40722187574437 is an equidigital number, since it uses as much as digits as its factorization.

40722187574437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73758720, while the sum is 61.

The spelling of 40722187574437 in words is "forty trillion, seven hundred twenty-two billion, one hundred eighty-seven million, five hundred seventy-four thousand, four hundred thirty-seven".