20370717623 has 2 divisors, whose sum is σ = 20370717624. Its totient is φ = 20370717622.

The previous prime is 20370717607. The next prime is 20370717629. The reversal of 20370717623 is 32671707302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20370717623 - 2⁴ = 20370717607 is a prime.

It is a super-2 number, since 2×20370717623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20370717629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10185358811 + 10185358812.

It is an arithmetic number, because the mean of its divisors is an integer number (10185358812).

Almost surely, 2^20370717623 is an apocalyptic number.

20370717623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20370717623 is an equidigital number, since it uses as much as digits as its factorization.

20370717623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 38.

The spelling of 20370717623 in words is "twenty billion, three hundred seventy million, seven hundred seventeen thousand, six hundred twenty-three".